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Gaertnera and Pagamea: Genera within the Psychotrieae or constituting the tribe Gaertnereae? A wood anatomical and palynological approach
Jansen, Steven et al. (1996)
Wissenschaftlicher Artikel
The systematic value of endexine ornamentation in some Psychotrieae pollen (Rubiaceae-Rubioideae)
Jansen, Steven; Robbrecht, Elmar; Smets, Erik (1996)
Wissenschaftlicher Artikel
Cognition in systems
Radermacher, Franz J. (1996)
Wissenschaftlicher Artikel