A LECTURE ON POLLINATION OF FLOWERS delivered att the State Hortcultural Society, January, 1892. Cross and Self-fertilization in Plants, a paper read at the meeting of the Eastern Iowa Horticultural Society, Dec., 1891. The Effects of Cross-fertilization in Plants, read at the meeting of the Northern Horticultural Society, Dec., 1891.
Häftad bok.
Gott skick. Des Moines (Iowa Printing Co.) 1892. Publ. wrappers. 57 pp. Numerous illustrations. Signature on front cover. Louis Hermann Pammel (1862-1931) was professor of botany at Iowa State University (1889-1929).