ScienceJohn Michels (Journalist) 1955 |
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Стр. 410
... sample holder cylinder samples of active and inactive carbon , and two samples to be dated , are mounted on copper supports . Each channel measures the activity of one of the samples , and the pulses of the four channels are recorded ...
... sample holder cylinder samples of active and inactive carbon , and two samples to be dated , are mounted on copper supports . Each channel measures the activity of one of the samples , and the pulses of the four channels are recorded ...
Стр. 651
... samples from Ohio . All samples consisted of spruce wood . For description and discussion of Chicago samples see Libby ( 8 , 25 , 26 ) and Flint and Deevey ( 1 ) . Imbedded in till believed , before dating , to be of Cary age ...
... samples from Ohio . All samples consisted of spruce wood . For description and discussion of Chicago samples see Libby ( 8 , 25 , 26 ) and Flint and Deevey ( 1 ) . Imbedded in till believed , before dating , to be of Cary age ...
Стр. 654
... samples consisted of wood from the upper till . C - 664 , a sample taken from the inter- vening sand - and - gravel layer , was dated at 14,042 ± 1000 yr . The upper till was classified by Ruhe as Cary in age ( 28 ) . Contemporaneous ...
... samples consisted of wood from the upper till . C - 664 , a sample taken from the inter- vening sand - and - gravel layer , was dated at 14,042 ± 1000 yr . The upper till was classified by Ruhe as Cary in age ( 28 ) . Contemporaneous ...
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ANNUAL REVIEW | 166 |
PSYCHOLOGY | 189 |
Child Psychology M RadkeYarrow and L J Yarrow | 220 |
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