Science: v.1-v.219Moses King, 1969 |
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Стр. 950
... chemical and biological weapons . In Vietnam a form of chemical warfare— the use of herbicides and antipersonnel gases - has been in progress for many years . These developments are of far - reaching importance and have grave ...
... chemical and biological weapons . In Vietnam a form of chemical warfare— the use of herbicides and antipersonnel gases - has been in progress for many years . These developments are of far - reaching importance and have grave ...
Стр. 1384
... chemicals , in- dustry operates almost wholly on an empirical basis . Chemical firms start by synthesizing a product and then " screening " it - testing to see if it has pesticidal properties . Probably close to 80,000 chemicals are ...
... chemicals , in- dustry operates almost wholly on an empirical basis . Chemical firms start by synthesizing a product and then " screening " it - testing to see if it has pesticidal properties . Probably close to 80,000 chemicals are ...
Стр. 1590
... Chemicals 1 ) Some chemicals that are exten- sively metabolized fail to attract bac- teria . This result makes it clear that metabolism of a chemical and energy production from it are not sufficient to make a chemical an attractant ...
... Chemicals 1 ) Some chemicals that are exten- sively metabolized fail to attract bac- teria . This result makes it clear that metabolism of a chemical and energy production from it are not sufficient to make a chemical an attractant ...
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