TY  - BOOK
AU  - Gilbertson, D. D.
AU  - Kent, M.
AU  - Pyatt, F. B.
TI  - Practical ecology: for geography and biology survey, mapping and data analysis 
SN  - 0044453752
AV  - QH541.28 .G55 1985
PY  - 1985///
CY  - Boston
PB  - Unwin Hyman
KW  - Ecology
N1  - includes Bibliographical references and index
ER  -