K. D. Zinnert

Investigations on the ecology and natural control of the larch sawfly (Pristiphora erichsonii Htg., Hym.:Tenthredinidae) in central Europe. Part II: natural enemies: their biology and ecology, and their role as mortality factors in P. erichsonii.

H. Pschorn-Walcher, K. D. Zinnert, 1971 .