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leptographium root diseases of conifers

Black stain root disease of conifers

By Paul F. Hessburg

Leptographium species

By Karin Jacobs,Karin Jacobs,Michael J. Wingfield

Leptographium root diseases on conifers

By T. C. Harrington,F. W. Cobb

Evaluation of root diseases on the Ducharme logging unit, Flathead Indian Reservation

By Robert L. James