00329nam a2200109Ia 4500008004100000082001700041100002300058245004900081260001200130300001400142440006300156260907b        |||||||| |||| 00| 0 eng d  a338.954 B245  aBardhan, Pranab K.  aOn optimum subsidy to a learning industryb/  a b c   app. 54-70  aInternational Economic Review ; v.12, no.1 , February 1971