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
Sanitation code.
Public health
RA 601 D46 1991 COM / D-0138-COM