00325nam a2200109Ia 4500008004100000040002500041082001600066100002400082245005100106260005000157300000800207230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a 516.24 B21  aBalmeo, Virginia G. 0aWorktext in trigonometry for college freshmen   bPurely Books Trading & Publishing Corp.c2012  a153