HOW TO KNOW THEM
A POCKET MANUAL DESCRIBING THEIR
MOST IMPORTANT CHARACTERISTICS
Revised by Dr. George D. Fuller, Professor
Emeritus of Botany, University of Chicago,
Curator of Botany, Illinois State Museum, and
State Forester E. E. Nuuttila.
(1st. ed., 1927, by Mattoon, W. R., and Miller, R. B.)
Revised 1955
DEPARTMENT OF CONSERVATION
DIVISION OF FORESTRY
SPRINGFIELD
WILLIAM T. LODGE,
Director
(Printed by Authority of the State of Illinois)
