Copping, L. G. (1996). Crop protection agents from nature. The Royal Society of Chemistry.
Chicago-viite (17. p.)Copping, Leonard G. Crop Protection Agents from Nature. Cambridge: The Royal Society of Chemistry, 1996.
MLA-viite (9. p.)Copping, Leonard G. Crop Protection Agents from Nature. The Royal Society of Chemistry, 1996.
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