However, there are still several types of calls that necessitate the use of telephone operators.

However, the litter remained, augmented by several dozen lunchroom suppers.

However, to the extent that the monetary authorities, in their effort to ease credit in the next several months, conduct their open market operations in longer-term Government bonds, they will certainly act to accentuate any tendency for long-term interest rates to ease as a result of market forces.

However, several telescope manufacturers have recently developed telescope systems that are calibrated with the use of built-in GPS, decreasing the time it takes to set up a telescope at the start of an observing session.

However, the Vandals tried for several decades to force their Arian beliefs on their North African Nicene subjects, exiling Nicene clergy, dissolving monasteries, and exercising heavy pressure on non-conforming Christians.

However, Wolfram points out that at the time " Clovis got no farther than the Seine ; only after several more years did the Franks succeed in occupying the rest of the Gallo-Roman buffer state north of the Loire.

However, he was not, according to several sources, Dinis ' favourite son ; his half-brother, the illegitimate Afonso Sanches, enjoyed full royal favour.

However, several other biographers of Alexander dispute the claim, including the highly regarded secondary source, Plutarch.

However, there may be several such allophones, or the linguist may prefer greater precision than this allows.

However, it does contain several galaxies.

However, music spanning several octaves could be played by repeated calls to a machine-language tone generator.

However, the total population of the arctic fox must be in the order of several hundred thousand animals.

However, several bands continued and arrangers provided renowned arrangements.

However, there were several others:

However, as of 2011 adoption of the new terms has been slow and usage has been limited in the marketplace and in the press, with notable exceptions such as Linux operating systems, several textbooks and scientific research papers.

However, the Germans swam across again and some others got over by a bridge a little way up-stream, after which they assailed the barbarians from several sides at once and cut down many of them.

However, several spellings of his surname exist — Thatch, Thach, Thache, Thack, Tack, Thatche and Theach.

However the loss of Culloden, the relative sizes of Orient and Leander and the participation in the action by two of the French frigates and several smaller vessels, as well as the theoretical strength of the French position, leads most historians to the conclusion that the French were marginally more powerful.

However, there will be several terms of the form x < sup > n − 2 </ sup > y < sup > 2 </ sup >, one for each way of choosing exactly two binomials to contribute a y.

However, when a national trade imbalance expands beyond prudence ( generally thought to be several percent of GDP, for several years ), adjustments tend to occur.

However, it is likely that fewer fought in the actual battle on the Italian side: Harold Marcus notes that " several thousand " soldiers were needed in support roles and to guard the lines of communication to the rear.

However, the three leading Italian brigades had become separated during their overnight march and at dawn were spread across several miles of very difficult terrain.

However, there still were several unsolved problems, most notably the description of superconductivity and the Kondo effect.

However, several important phase transitions, such as the Mott insulator-superfluid transition, are known that do not follow the Ginzburg-Landau paradigm.

However, the Greek tradition is referring to the existence of vapours and chewing of laurel-leaves, which seem to be confirmed by recent studies.

However, when applied to data from non-randomized experiments or observational studies, model-based analysis lacks the warrant of randomization.

However, studies of processes that

However, Paris ignored the powerful developments in quantitative studies underway in the U. S. and Britain, which reshaped economic, political and demographic research in those countries, while France fell behind.

However not all reception of Steinsaltz ' studies have been wholly positive.

However, studies have shown that blind cave fish embryos begin to grow eyes during development but then something actively stops this process and flesh grows over the partially grown eyes.

However, Dr. Andrew Newberg said that Hira stayed at the University of Pennsylvania only for brain scans on studies of meditation, not his ability to fast indefinitely.

However, the first modern studies of magnetism only started with the development of electrodynamics by Faraday, Maxwell and others in the nineteenth century, which included the classification of materials as ferromagnetic, paramagnetic and diamagnetic based on their response to magnetization.

However, in 1936, the geologists John D. Boon and Claude C. Albritton Jr. revisited Bucher's studies and concluded that the craters that he studied were probably formed by impacts.

However, it is important to note that the patients in these studies received some form of spiritual healing ( i. e. not Christian Science ' treatment ') in addition to, not instead of, conventional medical care.

However, studies of mitochondrial DNA show that the divergence between each of the three chipmunk groups is comparable to the genetic dissimilarity between Marmota and Spermophilus.

However, this meta-analysis included two large studies of smokers, so it is not clear that the results apply to the general population.

However, during 2006-8, several reviews of case reports and pilot studies have failed to confirm this effect, collectively indicating no statistically significant interaction between daily consumption of 250 mL cranberry juice and warfarin in the general population.

However the increasing use of cropmarks to identify sites in lowland areas has tended to diminish the relative value of these cairns in Neolithic studies.

However, more recent studies which use the records of civil magistrates suggest that China did in fact have a very well developed system of civil law, in which provisions of the criminal code were interpreted to allow civil causes of action.

However, according to recent studies, California chaparral is extraordinarily resilient to very long periods without fire and continues to maintain productive growth throughout pre-fire conditions.

However, molecular pharmacology studies have shown that alcohol has only a few primary targets.

Because reported AIDS cases in Africa and other parts of the developing world include a larger proportion of people who do not belong to Duesberg's preferred risk groups of drug addicts and male homosexuals, Duesberg writes on his website that " There are no risk groups in Africa, like drug addicts and homosexuals ," However, many studies have addressed the issue of risk groups in Africa and concluded that the risk of AIDS is not equally distributed.

However, Fahrenheit's interest in natural science led him to begin studies and experimentation in that field.

However, studies have shown that the removal of tuition fees at third level has increased the number of students overall and those from lower socio-economic backgrounds.

However, the individual studies still require careful critical appraisal.

However, these studies failed to account for the impact of ethnic and cultural diversity and third-world immigration in its impact on purported social well-being and income distribution.

However, new studies focus on adenoviruses that can be permitted to reproduce, and destroy cancerous cells in the process, since the adenoviruses ' ability to infect normal cells is substantially impaired, potentially resulting in a far more effective treatment.

However evidence for archaic admixture in modern humans had been suggested by some studies.