1. Studies of the balsam woolly aphid, Adelges piceae (Ratz.) and its effects on balsam fir, Abies balsamea (L.);Balch;Can. Dept. Agric., Publ.,1952
2. Studies of predators of the balsam woolly aphid, Adelges piceae (Ratz.) (Homoptera: Adelgidae) V. Laricobius erichsonii Rosen. (Coleoptera: Derodontidae), an introduced predator in eastern Canada;Clark;Can. Ent.,1958
3. Biological control methods (Rearing and shipping methods);Delucchi;Proc. Xth Int. Congr. Ent., Montreal,1958
4. A study of the Traminae (Homopt.-Aphididae);Eastop;Trans. R. ent. Soc. London,1953
5. Eine neue Tannenlaus der Gattung Dreyfusia (Dreyfusia merkeri nov. spec);Eichhorn;Z. ang. Zool.,1957