Science: v.1-v.219Moses King, 1959 |
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Page 959
... Period and Twinning in Chimpanzees Abstract . The length of the gestation period in 118 births in a colony of chim- panzees was found to be 226.8 days , with a standard deviation of 13.3 and a range of 196 to 260 days . Six pairs of ...
... Period and Twinning in Chimpanzees Abstract . The length of the gestation period in 118 births in a colony of chim- panzees was found to be 226.8 days , with a standard deviation of 13.3 and a range of 196 to 260 days . Six pairs of ...
Page 1423
... period ) com- prised 11 paired presentations of the conditioned and unconditioned stimuli . The third phase ( extinction period ) comprised 15 presentations of the con- ditioned stimulus by itself . The three phases followed each other ...
... period ) com- prised 11 paired presentations of the conditioned and unconditioned stimuli . The third phase ( extinction period ) comprised 15 presentations of the con- ditioned stimulus by itself . The three phases followed each other ...
Page 1425
... period ) and the progressive phase . The preparatory phase occurs in the fall and requires a period of short days , with a daily dark period of 12 hours or more , for its completion . Once the preparatory phase has been com- pleted ...
... period ) and the progressive phase . The preparatory phase occurs in the fall and requires a period of short days , with a daily dark period of 12 hours or more , for its completion . Once the preparatory phase has been com- pleted ...
Contents
E G Baker | 871 |
News of Science Greater Role for United Nations Specialized Agencies Seen in Meeting Problem | 882 |
Reports Propagation of Poliovirus Measles and Vaccinia in Guinea Pig Spleen Cell | 894 |
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