Control of red spider and powdery mildew on greenhouse cucumbers
Whitcomb, W.D., Guba, E.F.
Control of red spider and powdery mildew on greenhouse cucumbers - Mass 1928 - 280-294 p. - Massachusetts Agricultural Ex .
Control of red spider and powdery mildew on greenhouse cucumbers - Mass 1928 - 280-294 p. - Massachusetts Agricultural Ex .