@article{64833, author = {Crathorne, A. R. and Moore, Gerald E.}, url = {http://library.usi.edu/record/64833}, title = {Brief trigonometry; a text in twenty assignments}, publisher = {H. Holt and company}, recid = {64833}, pages = {v, 121 p.}, address = {New York,}, year = {1941}, }