TY  - BOOK
AU  - Smith, Robert
TI  - Trigonometry
T2  - [International textbook company, Scranton, Pa. Blue books] 145 B
AV  - QA531 SMI 2000
U1  - 514 
KW  - Trigonometry
N1  - Includes bibliographical references and index; Trigonomentry and graphs.--The slide rule.--Mechanics and machine elements
ER  -