STUDIES IN NORTH AMERICAN VIOLETS, II: The Cytology of Some Sterile F1 Violet Hybrids
Vermont Agricultural Experiment Station: Burlington 1930. 9 x 6", wraps, 53pp, 22 plates, bib, library markings else vg. More
Vermont Agricultural Experiment Station: Burlington 1930. 9 x 6", wraps, 53pp, 22 plates, bib, library markings else vg. More