00294nam a2200109Ia 4500008004100000082001700041100002200058245005200080250000900132260003000141300001300171250811b        |||||||| |||| 00| 0 eng d  a658bB335.NA  aBattersby, Albert  aNetwork analysis for planning and schedulingb/  a3rd.  aLondon:bMacmillan,c1971  ax, 332p.