TY  - BOOK
AU  - Huckaby, Laurie Stroh
TI  - Lichens as Bioindicators of Air Quality
U1  - 579.7 21st ed
PY  - 1993///
CY  - Colorado
PB  - Forest Service U.S. Department of Agriculture
KW  - Lichens floras
KW  - floristics
KW  - species and communities
KW  - air pollution monitoring
N1  - USDA Forest Service General Technical Report RM-224
ER  -