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This paper investigates price competition in the Hotelling location model with linear transportation costs when consumer preferences are affected by the number of consumers shopping at the same store. A consumption externality permits us to Buy Ray Bans Canada consider the imitation and the congestion effects which are opposite forces at work. The coexistence of the two effects confers new validity to the principle of minimum differentiation as it was in the original Hotelling model. I show that firms do not need to set apart in order to earn higher profits. The results show firms endogenously choosing to locate in the center of the interval sharing the market with positive prices. Nigeria has been producing about 67% and importing 33% of its total fish supply. From 1978 to 1980 inclusive the total fish supply ranged from 720,775 to 878,000 tonnes, including 202,208 to 326,000 tonnes of imported fish.The 1980 estimated fish demand was 2,106,000 tonnes but the supply was only 878,000 tonnes (53%). To cope with present demands, it is estimated that domestic production will need to increase 300% and this can be effected by exploiting new fishing grounds and expanding aquaculture. Of the 64,900 ha available, only 82 ha is currently being Ray Ban Clubmaster Sizes properly fish farmed. Achievements, problems and plans are described.