During this precarious period of development the mother should continue to influence the growth of the child's conscience.

During the period from 1 July 1960 through 31 January 1961, additional research affiliations were effected with the U. S. Army Medical Research and Development Command to conduct research in procedures for quantitative electron microscopy, and for the study of biophysical and biological studies of the structure and function of ocular tissue.

During this period, a total of 762 exhibits were presented at 442 medical and scientific meetings.

During the period of this report, 37,470 new cases were entered into the various registries.

During this period, 7,827 teaching sets were distributed on loan.

During the period of this report, 63 panel exhibits depicting the latest developments in medical research were displayed.

During the period, the laboratory rendered centralized macropathological service to qualified requesters.

During the period from 1 July 1960 through 31 January 1961, the Medical Museum was required to move to Temporary Building `` S '' on the Mall from Chase Hall.

During the period of about 4 hours around sunset, skywave transmission conditions are building up until full nighttime conditions prevail ; ;

During the Civil War period Mr. Brown also invented the Brown & Sharpe formed tooth gear cutter, a basic invention which ultimately revolutionized the world's gear manufacturing industry by changing its basic economics.

During this period 7,484,268 members were received, yet the net membership now is only 9,910,741.

During the period of the Iberian Union ( 1580 – 1640 ), Portugal lost influence and power and made new enemies.

During the Romantic period, art came to be seen as " a special faculty of the human mind to be classified with religion and science ".< ref >

During the same period the Georgian states of Colchis and Tabal arose around the Black Sea and central Anatolia respectively.

During this same period, slave-holding border states had more free African-Americans and European immigrants than the lower South, which increased Southern fears that slavery was threatened with rapid extinction in this area.

During this period he published 18 plays and 3 novels, including the murder mystery The Red House Mystery ( 1922 ).

During this period winter sports were slowly introduced: in 1882 the first figure skating championship was held in St. Moritz, and downhill skiing became a trendy sport with English visitors early in the 20th century, as the first ski-lift was installed in 1908 above Grindelwald.

During the post-World War I period ski-lifts were built in Swiss and Austrian towns to accommodate winter visitors, but summer tourism continued to be important ; by the mid-20th century the popularity of downhill skiing increased greatly as it became more accessible and in the 1970s several new villages were built in France devoted almost exclusively to skiing, such a Les Menuires.

During the first 11 months of 2006, net imports grew by 21 percent to $ 1. 95 billion, while exports stood at $ 895 million, up 0. 3 percent from the same period in 2005.

During the first 11 months of 2006, the European Union remained Armenia's largest trading partner, accounting for 34. 4 percent of its $ 2. 85 billion commercial exchange during the 11-month period.

During January – February 2007, Armenia ’ s trade with Russia and other former Soviet republics was $ 205. 6 million ( double the amount from the same period the previous year ), making them the country ’ s number one trading partner.

During this period, spectator attendances dropped and media condemnation increased, but Simpson and Lawry flatly disregarded the public dissatisfaction.

During the Tokugawa period ( 1600 – 1868 ) the Ainu became increasingly involved in trade with Japanese who controlled the southern portion of the island that is now called Hokkaido.

During this period Agamemnon and his brother, Menelaus, took refuge with Tyndareus, King of Sparta.

During the Akkadian period, the Akkadian language became the lingua franca of the Middle East, and was officially used for administration, although the Sumerian language remained as a spoken and literary language.

During the Yuan dynasty, Halal methods of slaughtering animals and preparing food was banned and forbidden by the Mongol Emperors, starting with Genghis Khan who banned Muslims and Jews from slaughtering their animals their own way, and making them follow the Mongol method.

During the Middle Ages, Muslims were in conflict with Zoroastrians during the Islamic conquest of Persia ; Christians were in conflict with Muslims during the Byzantine-Arab Wars, Crusades, Reconquista and Ottoman wars in Europe ; Christians were in conflict with Muslims during the Crusades, Reconquista and Inquisition ; Shamans were in conflict with Buddhists, Taoists, Muslims and Christians during the Mongol invasions ; and Muslims were in conflict with Hindus and Sikhs during Muslim conquest in the Indian subcontinent.

During the Mongol invasion, many natives of Afghanistan fled to India where some established dynasties in Delhi.

During his first crusade in 1248, Louis was approached by envoys from Eljigidei, the Mongol ruler of Armenia and Persia.

During The Mongol invasion of Europe, Tatars under the leadership of Kadan, experienced a major failure in March 1242 at Klis Fortress in southern Croatia.

During his reign, the unsuccessful Mongol invasions of Japan occurred, first in 1274 and again in 1281.

During the Mongol Empire ( 1206 – 1405 ), printing using movable type spread from China to Central Asia.

During the Mongol Yuan Dynasty ( 1271 – 1368 ) the capital of China was moved to Beijing, eliminating the need for the canal arm flowing west to Kaifeng or Luoyang.

During World War II, the invading Nazi Germans also recruited Mongol Kalmyks to fight for them against the Soviet Union.

During the Cultural Revolution, the administration of Ulanhu was purged, and a wave of repressions was initiated against the Mongol population of the autonomous region.

During the last round of the Mongol attacks, Genghis died in Western Xia.

During the Yuan Dynasty, the Mongol emperors made Esoteric Buddhism the official religion of China, and Tibetan lamas were given patronage at the court.

During Mongol campaigns against the Jin Dynasty, the Mongols used about 5, 000 trebuchets, and they were very successful in destroying the Jin fortresses.

During the last round of the Mongol attacks, Genghis died in Western Xia.

During the Trần Dynasty, the armies of the Mongol Empire under Mongke Khan and Kublai Khan, the founder of the Yuan dynasty invaded Vietnam in 1257 AD, 1284 AD, and 1288 AD.

During the Mongol rule, in 1334, Hubei was devastated by the world's first recorded outbreak of the Black Death, which spread during the following three centuries to decimate populations throughout Eurasia.

During periods of Mongol influence, the ruling class supplemented their Korean names with Mongolian names.

During the period of Mongol Yuan Dynasty's administrative rule of Tibet, majority of Qinghai belonged to one of the three commandaries of the Tibetan region divided at that time, namely Amdo ( Tibetan: ཨ ༌ མད ོ; Chinese: 安多 ; pinyin: Ānduō ).

During the first Mongol invasion in 1231, Hong Bok-won greeted the Mongol army and turned against Goryeo.

During the Yuan Dynasty, banknotes were adopted by the Mongol Empire.

During the Mongol Yuan dynasty, the official writing system was:

During his first 15 years in China ( 1583 – 1598 ) Matteo Ricci formed a strong suspicion that Marco Polo's " Cathay " is simply the " Tatar " ( i. e., Mongol ) name for the