00409nam a22001457a 450000500170000000800410001702000140005804100080007208200170008010000190009724500640011626000520018030000120023270000190024420260416091242.0260416b        |||||||| |||| 00| 0 eng d  a340060972  aeng  a334.6bHEL/T  aHelm, Franz C.  aThe Economics Of Co-operative Enterprisec/by Franz C. Helm  aLondon:bUniversity Of London Press LTD;c1968.  ax,246p.  aHelm, Franz C.