Implementing rules and regulations of chapter VII :

Implementing rules and regulations of chapter VII : industrial hygiene of the sanitation code of the Philippines amending administrative order no. 111 s. 1991 / Department of Health - Manila : DOH, 1991. - 99 pages : 23 cm.


Sanitation code.
Public health

RA 601 D46 1991 COM / D-0138-COM

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