00500nam a2200157Ia 4500001001100000005001700011008004100028050001400069090001100083245009600094260003600190300002500226504004200251650003400293999001500327000000572320251012174442.0  711019s1966    nyua     b    000 0 eng00aH61b.H43  a300.1810aSocial technologyc[by] Olaf Helmer. Contributions by Bernice Brown [and] Theodore Gordon.   aNew York,bBasic Booksc[1966]   a108 pbillusc25 cm.  aIncludes bibliographical references.  0aSocial sciencesxMethodology.  c3739d3739