00317nam a2200121Ia 4500008004100000082001500041100001800056245003800074260004200112300001700154942000700171999001700178190709s9999    xx            000 0 und d  a514.5 R395  aRichardson, M 0aPlane and spherical trigonomentry  aNew yorkbThe macmillan companyc1960  axiv,343,xxii  cBK  c40855d40855