00356nam a2200133Ia 4500003000600000005001700006008004100023020001500064040004900079082001800128100002000146245003300166260002300199NORSU20240719010311.0240220s9999    xx            000 0 und d  a9710819178  aNORSU Dumaguete (Main Campus ll)cNORSU-MCII  a516.24 K28 c1  aKells, Lyman M. 0aPlane spherical Trigonometry  bMcGraw-Hillcc1954