TY  - BOOK
AU  - Graham,Linda
TI  - Origin of land plants
SN  - 0471615277
U1  - 561 19
PY  - 1993///
CY  - New York
PB  - John Wiley and Sons, Inc.
KW  - Plants
KW  - Spines
KW  - Paleobotany
KW  - Evolution
N1  - Includes index and bibliographical references
N2  - Environment Management
ER  -