TY  - BOOK
AU  - Tanai,Toshimasa
AU  - Wolfe,Jack A.
ED  - Geological Survey (U.S.)
TI  - Revisions of Ulmus and Zelkova in the Middle and Late Tertiary of western North America
T2  - Geological Survey professional paper
U1  - 561.3 
PY  - 1977///
CY  - Washington,D.C.
PB  - United States Government Printing Office
KW  - Elm, Fossil
KW  - Zelkova, Fossil
KW  - Paleobotany
KW  - Tertiary
KW  - North America
N1  - Includes index; Bibliography: p. 10-11
ER  -