TY  - BOOK
AU  - Thomas, William A.
TI  - Biological indicators of environmental quality: A bibliography of abstracts
SN  - 0-250-40022-7
PB  - Ann Arbor Science Publishers, Inc
UR  - http://krc.clri.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=8786
ER  -