Pesticide handbook
Frear, D.E.H.
Pesticide handbook by D.E.H. Frear, et. al. - Pennsylvania 1952 - 176 p.
Pestidice
632.9 / F 849 P
Pesticide handbook by D.E.H. Frear, et. al. - Pennsylvania 1952 - 176 p.
Pestidice
632.9 / F 849 P