GB/T 11742-1989 Standard PDF file download ; GB/T 11742-1989 Standard english preview version download

GB Standard Code	GB/T 11742-1989
Standard Category	China National Standards
GB Standard English Title	Standard method for hygienic examination of hydrogen sulfide in air of residential areas--Methylene blue spectrophotometric method
GB Standard Chinese Title	居住区大气中硫化氢卫生检验标准方法亚甲蓝分光光度法
Chinese Version Price	$15 USD per 50 pages
English Translation Price	About $15 per 1 page; Inquire us for detail price

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