000 00399 a2200133 4500
082 _a510.8
_bUn38a
245 1 _aFRACTIONAL FACTORIAL EXPERIMENT DESIGNS FOR FACTORS AT TWO LEVELS
260 _aWashington
_b
_c1957
300 _a85
440 _aU. S. National Bureau Of Standards. Applied Mathematics Series, 48
_v
650 _aFactorial Experiment Designs
964 _gCIRC
997 _a51932 C
999 _c454876
_d454876