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DIVERGENCE AND ADAPTATION IN ADJACENT PLANT POPULATIONS: STUDIES ON THE ECOLOGY AND PHYSIOLOGY OF THE BIG BLUESTEM (ANDROPOGON GERARDII VITMAN) - SAND BLUESTEM (ANDROPOGON HALLII HACK.) COMPLEX IN NEBRASKA (SANDHILLS, PRAIRIE, GENECOLOGY)

BARNES, PAUL WARREN.   The University of Nebraska - Lincoln ProQuest Dissertations & Theses,  1984. 8423759.