1. Number 405 - Taxonomic Revision of the Nearctic Genus Acanthomyops (Hymenoptera: Memoir Collection: Core Historical Literature of Agriculture Publisher: Cornell University, Agricultural Experiment Station Publication Place: Ithaca, N.Y. Date: 1968 Format: Issue
2. Number 406 - Pollination and Serological Procedures for Isolating Incompatibility Genotypes in the Crucifers: Memoir Collection: Core Historical Literature of Agriculture Publisher: Cornell University, Agricultural Experiment Station Publication Place: Ithaca, N.Y. Date: 1968 Format: Issue
3. Number 407 - California Aphids in the Cornell University Collection (Homoptera: Memoir Collection: Core Historical Literature of Agriculture Publisher: Cornell University, Agricultural Experiment Station Publication Place: Ithaca, N.Y. Date: 1968 Format: Issue