TY  - BOOK
AU  - Ewer,D.W.
AU  - Hall,J.B.
TI  - Ecological biology: practical book 
SN  - 0582606462
PY  - 1975///
CY  - Harlow, Essex
PB  - Longman
KW  - Ecology
KW  - Laboratory manuals
KW  - Biology
ER  -