List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1931)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1968)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1969)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1971)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1973)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1977)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1978)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1963)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1950)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1951)