Harold O. Batzer

No biography available.

Works (6)

Cover of Jack-pine budworm

Jack-pine budworm

Cover of White-pine weevil damage differs significantly by seed source on two northern Minnesota jack pine plantations

White-pine weevil damage differs significantly by seed source on two northern Minnesota jack pine plantations

Cover of Jack pine from Lake States seed sources differ in susceptibility to attack by the white-pine weevil

Jack pine from Lake States seed sources differ in susceptibility to attack by the white-pine weevil

Cover of Spruce budworm defoliation causes continued top killing and tree mortality in northeastern Minnesota

Spruce budworm defoliation causes continued top killing and tree mortality in northeastern Minnesota

Cover of Two Cases of Wind Damage to Balsam Fir After Cutting

Two Cases of Wind Damage to Balsam Fir After Cutting

Cover of World directory of forest pathologists and entomologists

World directory of forest pathologists and entomologists