Studies of American plants. by Paul C. Standley.

v.8:no.1(1930)

Studies of the vegetation of Missouri ... / By Julian A. Steyermark.

v.9:no.5(1940)

Studies of American plants. by Paul C. Standley.

v.11:no.5(1936)

Studies of American plants. by Paul C. Standley.

v.22:no.1(1940)

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 of the anatomy of the extrahepatic biliary tract in Mammalia.

v.22:no.6(1940)

Days with birds; studies of habits of some East African species.

v.38(1956)