00793nam a22002177a 4500001001300000003000400013005001700017008004100034040000800075110008400083245017900167260002700346336002100373337002500394338002200419650005700441653002200498653002300520653002400543653000800567D0001B002115DOH20210512113141.0210512b           ||||| |||| 00| 0 eng d  erda1 aPhilippines. bDepartment of Health. bNon-Communicable Disease Control Service00aImplementing rules and regulations (IRR) on chapter VII (Industrial Hygiene) of the sanitation code of the Philippines, P.D. 856 amending administrative order no. 111 s. 1991  aManila :bDOH,c[1999]  2rdacontentatext  2rdamediaaunmediated  2rdacarieravolume 2aOccupational Health x legislation and jurisprudence  aIndustrial Health  aIndustrial Hygiene  aOccupational Safety  aIRR