Advances in pollen spore-research : Vol.x, Studies in the pollen morphology of south indian rubiaceae / Mathew, P.M. Philip, Omana. Nair, P.K.K. Pollen morphology. Rubiaceae . Pollen grains. 581.4 NAA Includes bibliographical references. New delhi : Today and tomorrow's, c1983. c1983. 1983 Text [ix], 80p. : eng