00416nam a2200097Ia 4500008004100000050002100041100001900062245007000081247009100151264007600242230508s1971    xx            000 0 und d  aQA 533 R544 19711 aRider, Paul R.10aPlane and spherical trigonometry: bwith tables /cRider, Paul R.  aPlane and spherical trigonometry: with tables_QA 533 R544 1971 c.2_Rider, Paul R._1971  a[Place of publication not identified] : bMacmillan Publishers, c1971.