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Leonard Haseman
![Leonard Haseman](/build/images/book-catalog/no-avatar.png)
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Leonard Haseman
INTRODUCTION In the preparation of a book of this nature, to be used in the grade schools, we realize that the one fundamental thing to keep in mind is the economic importance of the insect, be it good or bad. The child wants to know what is good and what is bad and how he can make use of the good and how he can get rid of the bad. And yet there is something more associated with the life, work and...
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