00375nam a22001337a 450000500170000000800410001702000080005804100080006608200200007410000200009424500650011426000440017930000180022320260519120504.0260519b        |||||||| |||| 00| 0 eng d  a000  aeng  a658.4032bRUB/I  aRubin, Martin L  aIntroduction to the system life cyclec/ by Martin L. Rubin   aAmerica bBrandon/ Systems Press c1970  axxiii, 227p.