TY  - BOOK
AU  - Schoen,Harold.L
AU  - Hirsch, Cristian R
TI  - Trigonometry and its applications
SN  - 0070290598
AV  - QA 531 Hir 
PY  - 1985///
CY  - New York
PB  - McGraw-Hill
KW  - MATHEMATICS--HANDBOOKS, MANUALS, ETC
KW  - TRIGONOMETRY, APPLICATION
ER  -