Proc. Of the tenth international congress of entomology, Montreal, 17-25 Aug., 1956
Tenth International congress
Proc. Of the tenth international congress of entomology, Montreal, 17-25 Aug., 1956 - Ottawa Mortimer 1958 - 579-1112
595.7
Proc. Of the tenth international congress of entomology, Montreal, 17-25 Aug., 1956 - Ottawa Mortimer 1958 - 579-1112
595.7