The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 140
... compounds dithiocarbamates chlorine based compounds inorganic compounds metal - organic compounds carboxylic aromatic aliphatic acid compounds heterocyclic nitrogen derivatives aliphatic organic nitrogen compounds Rodenticides inorganic ...
... compounds dithiocarbamates chlorine based compounds inorganic compounds metal - organic compounds carboxylic aromatic aliphatic acid compounds heterocyclic nitrogen derivatives aliphatic organic nitrogen compounds Rodenticides inorganic ...
Page 141
... compounds are quite stable and have long residual action ; they are , therefore , particularly valuable where protection is required for prolonged peri- ods . In addition to plant protection , they have been of outstanding value in ...
... compounds are quite stable and have long residual action ; they are , therefore , particularly valuable where protection is required for prolonged peri- ods . In addition to plant protection , they have been of outstanding value in ...
Page 368
... compounds . If green plants photosynthesize in the presence of radioac- tive carbon dioxide , the compounds formed early in the pathway by which the carbon is reduced , or " fixed " into organic compounds , become labelled with ...
... compounds . If green plants photosynthesize in the presence of radioac- tive carbon dioxide , the compounds formed early in the pathway by which the carbon is reduced , or " fixed " into organic compounds , become labelled with ...
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activity America animals appear areas atoms became become body called camera century changes characteristics chemical Church colour common complete compounds consists containing continued drugs early effect electrons elements energy example existence experience Family field Figure fins fishes groups human important increase individual industry Italy known later lens less light liquid living lower major material means ment methods move movement natural North object occur organic original Peking Pentecostal percent period permafrost personality pest Peter petroleum Philip philosophy photographs plants political position possible practice present printing problems production Quakers range region result rocks similar social South species structure surface temperature theory tion United usually widely