TY  - BOOK
AU  - Leithold, Louis
TI  - Trigonometry
SN  - 971110671X
AV  - QA531 .L44 1989
PY  - 1989///
CY  - Reading, Massachusetts
PB  - Addison-Wesley
KW  - Trigonometry
N1  - Reprinted under authority of P. D. No. 285, as amended by P. D. Nos. 400 & 1203 by, JMC Press, Inc. Quezon City, Philippines; Includes index
ER  -