TY - RPRT TI - Application of the direct product of matrices to the analysis of fractional factorials of the 2 to the m power 3 to the n power series AU - Connor, W S PY - 1958 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 5850 DO - 10.6028/NBS.RPT.5850 ER -