Canadian Plant Disease Survey. v.66, 1986
Krehm, H.S., ed.
Canadian Plant Disease Survey. v.66, 1986 edited by H.S. Krehm - Ontario Agriculture Canada 1986 - v.66, 61 p.; 26cm.
0008476X
Canadian Plant Disease Survey. v.66, 1986 edited by H.S. Krehm - Ontario Agriculture Canada 1986 - v.66, 61 p.; 26cm.
0008476X