Studies of American plants. by Paul C. Standley.

v.22:no.1(1940)

Studies in American plants, II / Dorothy N. Gibson.

v.32:no.11(1970)

Contributions to the flora of South America: Studies on Andean Compositae, II. Studies in South American plants, III.

v.27:no.2(1951)

Studies in American plants / Dorothy N. Gibson.

v.31:no.15(1968)

Studies of American plants. by Paul C. Standley.

v.8:no.5(1931)

Studies of American plants. by Paul C. Standley.

v.8:no.3(1930)

Studies in American plants, III / Dorothy N. Gibson.

v.34:no.6(1972)

Studies in American plants, VI / Dorothy L. Nash.

v.36:no.9(1974)

Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.22:no.4(1940)

Phylogenetic studies of North American minnows : with emphasis on the genus Cyprinella (Teleostei, Cypriniformes) / by Richard L. Mayden.

no.80 (1989)

Studies of American plants. by Paul C. Standley.

v.22:no.3(1940)