00455nam a22001337a 450000500170000000800410001702000180005804000130007608200270008911000340011624501090015026000510025930000110031020180418103659.0180418b        xxu||||| |||| 00| 0 eng d  a9789696030249  cPK-LaUMT  a620.00954913637bPAK-W  aPakistan Engineering Congress  aWorld environment day June 2014 /cPakistan Engineering Congress; compiled and edited by Iftikhar ul Haq  aLahore :bPakistan Engineering Congress,c2014  a173 p.