00405nam a2200145Ia 4500003000600000005001700006008004100023020002200064040002500086082002000111100001800131245005200149260002400201500003400225NORSU20240712055455.0240214s9999    xx            000 0 und d  a978-1-68094-905-6  aNORSU-DumcNORSU-Dum  a516.24 T73 2018  a3G E-Learning 0aTheory, Practice and Techniques in Trigonometry  b3G E-Learningc2018  aIncludes References and Index