Yazar
John Robert Berg
4 cilt bulundu.
Cilt sonuçları
Wild potatoes (Solanum section Petota; Solanaceae) of North and Central America
David M. Spooner, Ronald G. Van Den Berg, Aaron Rodriguez, John Bamberg, Robert Jijmans · American Society of Plant Taxonomists
209 sayfa · 2004
Solanaceae / Solanum / Identification / Classification
Pre-Cambrian geology of the Galena-Roubaix district, Black Hills, South Dakota
John Robert Berg · University of South Dakota
50 sayfa · 1946
Geology / Geology, Stratigraphic / Stratigraphic Geology
Annotated bibliography of geological education
John Robert Berg · Published for the National Association of Geology Teachers by the American Geological Institute
26 sayfa · 1963
Geology / Study and teaching / Bibliography