00365nam a22001217a 4500082002700000100001500027245003300042260005500075300003100130526003700161526003700198650000800235  a516.24bABBcL-4, P-12  aAbbott. P,  aTeach yourself trignometry /  aLondon:bThe english universities press ltdcc1940  avii, 204 p. :bdiagrc18cm  a0b0c0d516_240000000000000_ABB  a0b0c0d516_240000000000000_ABB  aMCE