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b. d. walsh (1808-1869)
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View Bibliography of the more important contributions to American economic entomology By United States. Bureau of Entomology. 
Bibliography of the more important contributions to American economic entomology
By United States. Bureau of Entomology.
View Bibliography of the more important contributions to American economic entomology By United States. Bureau of Entomology.,Nathan Banks,Samuel Henshaw 
Bibliography of the more important contributions to American economic entomology
By United States. Bureau of Entomology.,Nathan Banks,Samuel Henshaw
View Benjamin Dann Walsh, Illinois' first state entomologist By William F. Steinbacher-Kemp
Benjamin Dann Walsh, Illinois' first state entomologist
Benjamin Dann Walsh, Illinois' first state entomologist
By William F. Steinbacher-Kemp