48 SOCIAL SCIENTIST
imports, the prescence of such imports distinguish the avisngs constrained case from the other two. The distinction between the foreign exchange constrained and the agricultural constrained cases rests on whether agriculture should optimally grow at the exogenously given maximum feasible rate or not. If it should, the agriculture constraint bites, if not, the foreign exchange constraint operates.
12. A simple mathematical model demonstrating this argument which had been included in the orieinal version of the paper, in left out here for expositional convenience. Readers interested in following the argument are requested to consult the original paper which I can make available.