00398nam a2200145Ia 450000500170000000800410001703700130005804000200007104100130009108400200010410000160012424500540014026000490019430000090024320250326124745.0250326s9999    xx            000 0 und d  aTextbook  aFMSLbengcFMSL  aeng2eng  aX:89Q1 L9qFMSL  aRohatgi P K 0aTechnological forecastingcRohatgi P K; Rohatgi K  aNew DelhibNew Delhi, Tata McGraw-Hillc1979  a320p