Author: WIJMSTRA, T.A. & TH. VD HAMMEN
Title: Palynological data on the history of tropical savannas in northern South America. [ Llanos Rientales (Colombia) & Rupununi Savannas (Guyana)]
Description: 1966. Leidse Geol. Meded. 38; pp. 71-90, 15 fig./phot. 2 plts. w. pollen phot. 4 plts. h.t. with pollen diagrams folding-out. Orig. extract, stapled, very good.

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