Kramer, K.U. & Green, P. S. (ed.) 1990: The families and genera of vascular plants. I. Pteridophytes and gymnosperms

TitleThe families and genera of vascular plants. I. Pteridophytes and gymnosperms
AuthorshipKramer, K.U. & Green, P. S. (ed.)
PlacepublishedBerlin, etc.
Date published1990