000 00362 a2200133 4500
082 _a510.8
_bUn38a
245 1 _aTABLE OF ARCTANGENTS OF RATIONAL NUMBERS
260 _aWashington
_bU. S. Govt. Print. Off.
_c1951
300 _a105
440 _aIts Applied Mathematics Series, 11
_v
650 _aRational Numbers, Tables
964 _gCIRC
997 _a41028 C
999 _c454825
_d454825