00979cam a22002411 4500 6479336 AUA.1 20121031124918.0 750128s1948 xx 000 0 eng (OCoLC)1154185 DLC OYU DLC QA 531 .B96 1957 514 Butler, Charles H. (Charles Henry), b. 1894. 28315 Trigonometry for secondary schools; plane and spherical [by] Charles H. Butler [and] F. Lynwood Wren. [Boston] D. C. Heath [1957] vii, 360 p. illus., diagrs. 23 cm. Trigonometry. 28316 Wren, Frank Lynwood, 1894- joint author. 28317 7 cbc oclcrpl u ncip 19 y-gencatlg lcc BOOK QA 531 .B96 1957 8248 8248 0 0 lcc 0 0 Books AUA.1 AUA.1 GS 2012-10-31 Donation, Gary Councell 25.00 AUA011248 QA 531 .B96 1957 AUA011248 2012-10-31 00:00:00 25.00 2012-10-31 BOOK