TY  - BOOK
AU  - Cragg,J.B.
TI  - Advances in ecological research
U1  - 575.5 ADV.6 
PY  - 1969///.
CY  - London : 
PB  - Academic Press, Inc., 
KW  - Ecology
KW  - Climatic changes
KW  - Grassland ecology
KW  -  Penguins
KW  -  Pesticides
N1  - Includes index.
ER  -