00330nam a2200085Ia 450000500170000000800410001708200200005824501040007826000620018220250107154740.0241216s9999||||xx |||||||||||||| ||und||  aREF 526.097 INT 0aInternational symposium on problems related to the redefinition of North American Geodetic Networks  aCanadabThe University of New Brunswick Frederictonc1974