TY  - BOOK
AU  - Schaufele, Christopher  
AU  - Nancy Zumoff
TI  - Earth Algebra: college algebra with applications to environment issues
SN  - 0065008871
U1  - 363.7387 SCH 
PY  - 1993///
CY  - New York
PB  - Harper collins college publishers
N1  - Includes bibliographical references
ER  -