Philippine directory of occupational health and safety.

Bibliográfalaš dieđut
Eará dahkkit:	Wolff, Hans-Juergen
Materiálatiipa:	Girji
Giella:	eaŋgalasgiella
Almmustuhtton:	Manila Edith T. Flores and H.J. Wolff c1989.
Fáttát:	Industrial safety > Philippines > Directories. Industrial hygiene > Philippines > Directories.