TY  - BOOK
AU  - Hale,Mason E.
TI  - How to know the lichens
T2  - The Pictured key nature series
SN  - 0697047628.
AV  - QK587 .H25 1979
U1  - 589/.1/097 
PY  - 1979///
CY  - Dubuque, Iowa
PB  - W. C. Brown Co.
KW  - Lichens
KW  - United States
KW  - Identification
KW  - North America
N1  - Includes index; Bibliography: p. 22-24
ER  -