Report copyright - Preece test (copper-sulphate dip) for zinc coatings...U.S.DepartmentofCommerce BureauofStandards RESEARCHPAPERRP688 PartofBureauofStandardsJournalofResearch,vol.12,June1934 PREECETEST(COPPER-SULPHATEDIP)FORZINC
Please pass captcha verification before submit form