The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 80
Page 20
Carriers of disease Fertiliza- tion Parasitic Acarina Major body regions Digestive system. in the number of diseases they transmit to man . Many mites also are intermediate hosts of diseases transmissible to man , his domesticated ...
Carriers of disease Fertiliza- tion Parasitic Acarina Major body regions Digestive system. in the number of diseases they transmit to man . Many mites also are intermediate hosts of diseases transmissible to man , his domesticated ...
Page 354
... diseases and nematodes . Insects , of course , are not the only agents hazardous to crops . Plant diseases and the microscopic worms called nematodes have the potential of creating wholesale destruction of crops , especially those grown ...
... diseases and nematodes . Insects , of course , are not the only agents hazardous to crops . Plant diseases and the microscopic worms called nematodes have the potential of creating wholesale destruction of crops , especially those grown ...
Page 1028
... Diseases . Disease prevention is a constantly strived for goal , since diseases , once introduced into the aquar- ium , are often difficult to eliminate . Specimens therefore must be provided with water of suitable quality ; the proper ...
... Diseases . Disease prevention is a constantly strived for goal , since diseases , once introduced into the aquar- ium , are often difficult to eliminate . Specimens therefore must be provided with water of suitable quality ; the proper ...
Other editions - View all
Common terms and phrases
accelerator acid activity Adams administrative advertising Aeschylus aesthetic Africa agriculture animals appear become body called Central century changes contains continued cost countries crops cultural dance early East effect electrons elements engineering established example farm feet field figures flight followed function human important increase industry influence Italy Khoisan Knossos known Lake land languages later less living major materials means ment natural occur operations organization original patterns percent performance period plants play political population present production range region remains represented result River society sound South southern species structure style theory tion traditional United usually variety West Western widely