00341nam a2200121Ia 4500008004100000040003800041100002000079245003700099250000600136260004500142300001600187653001600203211214s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aKells , Lyman M 0aPlane and spherical trigonometry  a3  bMCGRAW-HILL BOOK COMPANY, INC.aNew york  axii,290p p.  aMathematics