00297nam a2200133Ia 45000030006000000080041000060400015000471000017000622450017000792500011000962600027001075460012001340050017001460STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKhanna, M.L.  aTrigonometry  aFourth  bJai Prakash Nathc1959  aEnglish20220125170006.0