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The Data-Solution Method to Some Nonlinear Problems of Survey Engineering
yang jian-hua1 ; yang fan2; yang zheng-wu3 (1 college of geological engineering and geomatics; chang n university xi n shanxi 710054 ; 2 project institute of oil-field kelamayi; 3 architecture material and geological project institute xian; 4 department of mathematics; xianyang teachers college; xianyang shaanxi 712000; china )
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