00285nam a2200097Ia 4500082001700000100001700017245008200034260004500116300000900161650001700170  a516.24 AYR/S  aAyres, Frank 0aSchaum'S Outline of Theory And Problems of Plane And Spherical Trigononometry  bMcgraw Hill Book CompanyaNew Yorkc1954  a207p  aTrigonometry