000 00305nam a2200109 4500
008 160616s 000 0
245 _aSix figure logarithmic trigonometrical functions of angles in degrees and minutes
100 _aAttwood, C
500 _aBd K56
942 _cBK
_2BK5844
080 _a51(083) ATT
999 _c5844
_d5844