00349nam a22001337a 450000500170000000800410001702000080005804100080006608200170007410000230009124500460011426000450016030000100020520260728110516.0260728b        |||||||| |||| 00| 0 eng d  a000  aeng  a330.1bHEL/T  aHeller, H. Robert   aThe Economic Systemc/by H. Robert Heller  aNew York:bThe Macmillan Company;c1972.  a298p.