WIEST J/ LEVY F, . (2016). A MANAGEMENT GUIDE TO PERT / CPM 2 ND ED. NEW DELHI: PHI LEARNING PVT. LTD.
WIEST J/ LEVY F, . 2016. A MANAGEMENT GUIDE TO PERT / CPM 2 ND ED. NEW DELHI: PHI LEARNING PVT. LTD.
WIEST J/ LEVY F, . A MANAGEMENT GUIDE TO PERT / CPM 2 ND ED. NEW DELHI: PHI LEARNING PVT. LTD. 2016.