TY  - BOOK
AU  - Engelsohn,Harold S.
TI  - Trigonometry: a complete and concrete approach 
SN  - 007019419X
U1  - 516.24 19
PY  - 1981///
CY  - New York
PB  - McGraw-Hill
KW  - Trigonometry
N1  - Includes index
ER  -