Science: v.1-v.219Moses King, 1967 |
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Стр. 1105
... method .. The advantage of the a - recoil method is the increase in track density , and hence sensitivity , by a factor of about 4 x 103. Although man - made objects have been dated by the fission track method , the overwhelming ...
... method .. The advantage of the a - recoil method is the increase in track density , and hence sensitivity , by a factor of about 4 x 103. Although man - made objects have been dated by the fission track method , the overwhelming ...
Стр. 1238
... methods of examination and in turn learn to circumvent or confound them . We here describe a new method which should be of value in distin- guishing paintings of the 18th century and earlier from forgeries made in the 20th century ...
... methods of examination and in turn learn to circumvent or confound them . We here describe a new method which should be of value in distin- guishing paintings of the 18th century and earlier from forgeries made in the 20th century ...
Стр. 1675
... method gives a lower limit to turgor pressure for the same cell in the normal state . The common method , incipient plasmolysis , gives an upper limit . On Nitella axillaris cells the two methods limit the turgor pressure at 5.1 to 5.7 ...
... method gives a lower limit to turgor pressure for the same cell in the normal state . The common method , incipient plasmolysis , gives an upper limit . On Nitella axillaris cells the two methods limit the turgor pressure at 5.1 to 5.7 ...
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Vol 155 No 3765 | 951 |
International Biological Program | 957 |
E M Williams | 974 |
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