by Shetler, S.G
Year of Publication 1979

by Shetler, S.G
Published in Bioscience (1971)

by Shetler, S.G
Published in Taxon (01.04.1979)

by Nowicke, J.W. (Smithsonian Institution, Washington, DC), Shetler, S.G, Morin, N
Published in Annals of the Missouri Botanical Garden (1992)

by Shetler, S.G, Morin, N.R
Published in Annals of the Missouri Botanical Garden (1986)

by Shetler, S.G, Wiser, S.K
Published in Proceedings of the Biological Society of Washington (31.12.1987)

by Rohr, B.R, Lawyer, J.I, Morse, L.E, Shetler, S.G
Published in Brittonia (USA) (01.10.1977)

by Shetler, S.G, Beaman, J.H, Hale, M.E, Morse, L.E, Crockett, J.J, Creighton, R.A
Published in Data Processing in Biology and Geology (1971)