Insect and human welfare ; an account of themore important relations of insects to the health human of man, to agriculture, and to forestry.
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Cambridge
Harvard Univ. Press
1947.
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| Rhifyn: | Rev. ed. |
| Pynciau: |