C. May

DUTCH ELM DISEASE IN OHIO.

C. May, 1930, Science.

Effects of Several Herbicides on Yews and Japanese Maples

L. Danielson, C. May, 1969, Weed Science.

Phloem necrosis of elm.

W. L. Baker, C. May, 1951 .

The timing of apple scab sprays

H. C. Young, C. May, 1927 .