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		No cover image available No cover image available Fewer applications of DDT with proper timing produce equal fields of potatoes at less cost G.W. Simpson and W.A. Shands by Simpson, G.W \| Shands, W.A. Series: (maine Agricultural Experiment station bulletin; no.533)Material type: Text; Format: print ; Literary form: Not fiction Publication details: Orono University of Maine 1954Availability: Items available for loan: 1 Call number: 635.212 9 SI58F. Place hold Add to cart (remove)

		No cover image available No cover image available Progress on insect and disease problems of potatoes in Maine : biology and control of aphids G.W. Simpson and W.A. Shands by Simpson, G.W \| Shands, W.A. Series: (maine Agricultural Experiment station bulletin; no. 470)Material type: Text; Format: print ; Literary form: Not fiction Publication details: Orono University of Maine 1962Availability: Items available for loan: 2 Call number: 635.212 7 SI58P, ... Place hold Add to cart (remove)

		No cover image available No cover image available Progress on some important insect and disease problems of Irish potato production in Maine G.W. Simpson and W.A. Shands by Simpson, G.W \| Shands, W.A. Series: (maine Agricultural Experiment station bulletin; no. 470)Material type: Text; Format: print ; Literary form: Not fiction Publication details: Orono Maine Agricultural Experiment Station 1949Availability: Items available for loan: 1 Call number: 635.212 7 SI58P. Place hold Add to cart (remove)

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