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Report on the international exhibition of electricity held at Paris, August to November 1881 [by] David Porter Heap
Heap David Porter | Government Printing Office | 1884
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Monographie
Report on the International Exhibition of Electricity held at Paris, August to November, 1881
Heap David Porter, Engineer Department, United States Army | Government printing Office | 1884
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Ancient and modern light-houses
Heap David Porter | ticknor and company | 1889