Bibliographic index of North American archaeocyathids / [by] Matthew H. Nitecki --

v.17:no.2(1967)

Studies of American plants, by Paul C. Standley.

v.4:no.8(1929)

Studies of American plants. by Paul C. Standley.

v.17:no.2(1937)

Studies of American plants. by Paul C. Standley.

v.17:no.3(1937)

Studies of American plants. by Paul C. Standley.

v.22:no.2(1940)

Studies of American plants. by Paul C. Standley.

v.8:no.1(1930)

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)

A provisional host-index of the fungi of the United States, by W.G. Farlow and A.B. Seymour.

pt.1