TY  - BOOK
AU  - Longley,William Raymond
AU  - Wilson,Wallace Alvin
TI  - Twelve lessons in trigonometry
AV  - QA537 .L6
PY  - 1928///]
CY  - New Haven, Conn.
PB  - Whitlock's book store, inc.
KW  - Trigonometry
KW  - Problems, exercises, etc
N1  - Cover title; At head of title: Yale University, the freshman year
ER  -