TY  - BOOK
AU  - Ashby,Maurice
TI  - Introduction to plant ecology
U1  - 581.5 
PY  - 1969///
CY  - New York
PB  - Macmillan
KW  - Descriptive biology
KW  - plants
KW  - Natural history
KW  - Plants
N1  - Includes index
ER  -