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Books Bücher 11 - 12 von 12 in OF FEEDING. Destructive insects may be divided into two classes, according to the...
" OF FEEDING. Destructive insects may be divided into two classes, according to the nature of the mouth parts. This is especially important from an economic point of view. The grasshopper, being provided with jaws, can be killed by poisons. The chinch bug,... "
The lake dwellings of Switzerland and other parts of Europe, tr. and ... - Seite 306
von Ferdinand Keller - 1866
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Yearbook of the United States Dept. of Agriculture

1909
...crops of the farmer. DESTRUCTIVE INSECTS ' CLASSED ACCORDING TO METHODS OF FEEDING. Destructive insects may be divided into two classes, according to the nature of the mouth parts. This is especially important from an economic point of view. The grasshopper, being provided...
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Congressional Serial Set

1909
...crops of the farmer. DESTRUCTIVE INSECTS CLASSED ACCORDING TO JIETHOD8 OF FEEDING. Destructive insects may be divided into two classes, according to the nature of the mouth parts. This is especially important from an economic point of view. The grasshopper, being provided...
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