ScienceJohn Michels (Journalist) 1948 |
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Стр. 156
... possible not only to obtain decisions on a much larger number of questions than would otherwise have been practicable but also to ascertain much more readily the needs and general wishes of zoologists . The scheme finally adopted was ...
... possible not only to obtain decisions on a much larger number of questions than would otherwise have been practicable but also to ascertain much more readily the needs and general wishes of zoologists . The scheme finally adopted was ...
Стр. 490
... possible method that can be devised is of value if we are to understand these processes . During recent years we have heard par- ticularly of the use of such tracers of hydrogen , car- bon , nitrogen , and oxygen , since these are ...
... possible method that can be devised is of value if we are to understand these processes . During recent years we have heard par- ticularly of the use of such tracers of hydrogen , car- bon , nitrogen , and oxygen , since these are ...
Стр. 492
... possible . After amplification of these small currents , the two currents are compared by means of what is essentially a Wheatstone bridge . In the work which I am describing Nier's instrument has been changed very slightly . The mass ...
... possible . After amplification of these small currents , the two currents are compared by means of what is essentially a Wheatstone bridge . In the work which I am describing Nier's instrument has been changed very slightly . The mass ...
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