Origin and early evolution of angiosperms
International Congress of Systematic and Evolutionary Biology(1st :1973 :Boulder, Colorado)
Beck, Charles Beverley.
New York London Columbia University Press
1976
'Most of the papers that comprise this book were presented initially in a symposium at the First International Congress of Systematic and Evolutionary Biology in Boulder, Colorado during August 1973' - Preface
Includes bibliographies and index
Angiosperms, Fossil.
Evolution.