000 002930000a22001450004500
245 _aDon Graf's data sheets
100 _aGraf, Don
250 _a2d ed.
260 _c1949
300 _a809 p.
500 _arevised and enlarged
080 _a69.001
_bG61
041 _aEN
942 _cBK
999 _c96357
_d96357