TY  - BOOK
AU  - x, x
AU  - Usher M.B.; Williamson,M.H.
TI  - Ecological Stability: x
SN  - 0412126109
U1  - 574.5/E18 
PY  - 1974///
CY  - London
PB  - Champman and Hall
KW  - Ecology
KW  - Botany - Ecology
N1  - Includes
ER  -