00494nam a2200145Ia 450000100040000000500170000400800410002102000150006210000240007724500440010125000120014526001130015730000550027065000230032524220261006003431.0120911s9999    xx            000 0 und d  a0534208452  aGustafson, R. David  aPlane trigonometry / David Gustafson R.  a4th ed.  bPacific Grove, Calif. : Brooks/Cole Pub. Co.,  c1994.aPacific Grove, Calif. : Brooks/Cole Pub. Co.,  c1994.  a1 v. (various pagings) : ill. (some col.) ; 24 cm.  aTrigonometry,plane