Pillerillä lisää moraalia?

Kirjallisuusarvostelu

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

v.23:no.3(1944)

Flora of Guatemala / Paul C. Standley and Julian A. Steyermark.

v.24:pt.3(1952)

Flora of Guatemala / by Paul C. Standley and Julian A. Steyermark.

v.24:pt.1(1958)

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

v.22:no.5(1940)

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

v.23:no.4(1944)

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

v.9:no.6(1941)

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

v.23:no.2(1944)

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

v.23:no.1(1943)

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

v.23:no.5(1947)

Studies of the American flora - I / By Julian A. Steyermark.

v.17:no.5(1938)

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

v.9:no.5(1940)

Contributions to the flora of Venezuela : from Ericaceae through Compositae / Julian A. Steyermark and collaborators.

v.28:no.3(1953)