Books by Helmens, K.F., 1990Click here for all books by Helmens, K.F., 1990 available for purchase on-line. Neogene-Quaternary geology of the High Plain of Bogotá, Eastern Cordillera, Colombia. Stratigraphy, paleoenvironments and landscape evolution. [Dissert, Bot., 163.] by Helmens, K.F., 1990 listed for sale on Bibliophile Bookbase. Click here for full details and on-line purchase. |