Only seven of his estimated seventy to ninety plays have survived into modern times, and there is a longstanding debate about his authorship of one of these plays, Prometheus Bound.

Only one of these pictures was a musical, Invitation to the Dance, a pet project of Kelly's to bring modern ballet to mainstream film audiences.

Only modern Dutch preserves this Germanic form, however.

Only the Lesser Poland Chronicle gives the date of his birth as somewhere between the years 920 – 931 ( depending on the version of the manuscript ), however, modern researchers don't recognize the Chronicle as a reliable source.

Only a tiny minority of modern republics do not have a single head of state: examples are:

Only gradually did the modern foot-specific shoe become standard.

Only Khartoum International Airport was equipped with modern operational facilities, but by the early 1990s, Khartoum and seven other airports had paved runways.

Only 53 teams in the modern era have posted sub -. 500 records in April and survived to make the postseason.

Only very few modern programs still honor this behavior, such as Lotus Notes, and Microsoft Excel.

Only with the modern evolutionary synthesis, was it established that variation needed to be heritable to act as the raw material for selection.

Only non-canonical sources have provided any Vulcans with family names, which are usually spoken of as defying attempts at both human pronunciation, especially with English-language phonemes, and human typesetting, especially with the characters of the modern Latin alphabet used for the English language.

Only with the advent of modern technology and industrialization, it slowly rose into prominence.

Only two lineages survived this period's massive extinction and into the Triassic: the genus Miocidaris, which gave rise to modern cidaroida ( pencil urchins ), and the ancestor that gave rise to the euechinoids.

Only in 1995 were the passages in the Sanskrit texts proven to be interpolations by a modern ( late 19th century ) forger.

Only a small marble fragment, a carved rose excavated by William Stukeley, survives which is currently preserved in Stamford Museum. See below for the modern monument erected by Smith of Derby Group.

Only small parts of the once enormous heaths and marshlands have survived until modern times.

In October 2005, The Flaming Lips recorded a cover of " If I Only Had a Brain " for the soundtrack of the video game Stubbs the Zombie, which features modern rock bands covering songs from the 1950s and 1960s.

Only in modern times the loss of land and lives could be stopped by building solid dikes.

Only one copy is known to have survived into modern times.

Only as the series progressed did Superman become the wholesome, morally upright figure of modern times.

Only underground bunkers are still able to provide some protection in modern wars.

Only five squares within each row contained numbers which subsequently led to the design of modern day bingo.

Only a few nomadic people have retained this form of lifestyle in modern times.

Only five golfers have won all four of golf's modern Majors at any time during their career, an achievement which is often referred to as a Career Grand Slam: Gene Sarazen, Ben Hogan, Gary Player, Jack Nicklaus, and Tiger Woods.

Only one rule prevailed in my conversations with these men: The more highly placed they are -- that is, the more they know -- the more concerned they have become.

Only by means of an intensive preoccupation with the detailed considerations following from any decision can he ensure attention to the practical details to be dealt with if the implications of immorality in the major decision are effectively to be checked.

Only this time around the conditions are different and the choice is far harder.

Only when the newest Mr. America or Mr. Universe discovers them and puts them into practice are we reacquainted with them and once again see how effective they really are.

Only the teacher and other professional personnel are permitted to see or use these records.

Only uninterrupted sequences of the former are eligible for formation of crystallites.

Only the vain and incurably sentimental among us will lose sleep simply because foreign peoples are not as impressed by our strength as they ought to be.

Only a dozen or so schools send as many as six students, and there are seldom more than fifteen men in any single delegation.

Only two teams in each league ( the Yankees and Detroit, the Dodgers and Cincinnati ) are battling for first place.

Only too often, however, you have the feeling that you are sitting in a room with some of the instruments lined up on one wall to your left and others facing them on the wall to your right.

Only high frequency sounds like mating calls are heard in this way but low frequency noises can be detected through another mechanism.

Only in a few cases are leaves produced along the length of the stem.

Only a limited number of actinium compounds are known including AcF < sub > 3 </ sub >, AcCl < sub > 3 </ sub >, AcBr < sub > 3 </ sub >, AcOF, AcOCl, AcOBr, Ac < sub > 2 </ sub > S < sub > 3 </ sub >, Ac < sub > 2 </ sub > O < sub > 3 </ sub > and AcPO < sub > 4 </ sub >.

Only extremely small quantities are used, however, due to its intense radioactivity.

11 ( 2008 ) Only Yerevan's Zvartnots International Airport and Gyumri's Shirak Airport are in use for commercial aviation.

Only the product is required to calculate planetary positions for an ephemeris, which explains why ephemerides are calculated in astronomical units and not in SI units.

Only 28 of the 49 parties to the agreements have the right to participate in decision-making at these meetings, though the other 21 are still allowed to attend.

Only red abalone may be taken ; black, white, pink, and flat abalone are protected by law.

Only small, isolated sections are left standing with the largest portion lying in a pile of rubble that stretches the length of where the aqueducts once stood.

Only the Jarawa and Sentinelese still maintain a steadfast independence and refuse most attempts at contact ; their numbers are uncertain but estimated to be in the low hundreds.

Only then in fact was payment for assembly attendance, the central event of democracy ( Similarly for the period before the Persian wars, but for the very early democracy the sources are very meagre and it can be thought of as being in an embryonic state ).

Only pitifully small pieces of land are gained, about the size of a football field, which are often lost again later.

Only two songs are in circulation from these recordings: " Steal Away " and " Operator ".