. "Frank Nigel Hepper" . "Botaniste" . "VIAF" . . . "Hepper" . "12415101"^^ . . "1994-08-30" . "Frank Nigel Hepper"@fr . . . . . . . "2013-07-26"^^ . . . . . . . . "2013-07-27" . . . . . "0000000116428536" . . . "Flora of Tropical East Africa : prepared at the Royal botanic gardens, Kew / ed. R. M. Polhill. Lemnaceae / by F. N. Hepper, 1973. - . - BLNA, 1993-12. - . -"@fr . . . "Frank Nigel" . . . . "Botaniste"@fr . . "Botaniste" . . . .