Progress on insect and disease problems of potatoes in Maine : Biology and contr
Simpsonand, G.W., Shands, W.A.
Progress on insect and disease problems of potatoes in Maine : Biology and contr - Orono 1962 - 54 p. - No. 602; Maine Agricultural Ex .
Progress on insect and disease problems of potatoes in Maine : Biology and contr - Orono 1962 - 54 p. - No. 602; Maine Agricultural Ex .