000 00297nam a2200121Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aPanchishkin.A
245 0 _aTrigonometric Functions
250 _a1st Ed.
260 _bMir Publishers
_c1988
650 _aMathematical Geography
942 _cBK
999 _c31027
_d31027