Canadian Plant Disease Survey. v.72, 1992
Krehm, H.S., ed.
Canadian Plant Disease Survey. v.72, 1992 edited by H.S. Krehm - Ontario Agriculture Canada 1992 - v.72, 124 p.; 26cm.
0008476X
Canadian Plant Disease Survey. v.72, 1992 edited by H.S. Krehm - Ontario Agriculture Canada 1992 - v.72, 124 p.; 26cm.
0008476X