Editore: USDA Agricultural Research Service, Entomology Research Division, Iowa State Project 1193, 1959, 102 Pp., 1959
Da: Eryops Books, Stephenville, TX, U.S.A.
Unpublished USDA report; softcovers, staple-bound; minor shelfwear w/ light creasing of wraps; o/w in good condition.