00748cam a2200193 7i4500 0000013813 20170516090000.0 20170516085953.0 170516 sz BI NM ISO 2975/VI 1977 International Organization for Standardization Measurement of water flow in closed conduits - tracer methods - part VI : transit time method using non-radioactive tracers International Organization for Standardization. Geneva: International Organization for Standardization, 1977. 13 p.: ill.; 30 cm.. International standard Standards, Engineering NM 0000007535 Book Standards HQ Library