सार्वजनिक क्षेत्र के उद्योगों में अनिवेश का दौर कब से प्रारम्भ हुआ - - When did the era of disinvestment start in public sector industries? - Sarwjanik Shetra Ke Udyogon Me anivesh Ka Daur Kab Se Prarambh Hua - Indian Economy in hindi, 1985 - 88 Ee . question answers in hindi pdf 1990 - 91 Ee . questions in hindi, Know About 1980 - 81 Ee . Indian Economy online test Indian Economy notes in hindi quiz book 1991 - 92 Ee .