Petrik, Milivoj.
The training of sanitary engineers : schools and programmes in Europe and in the United States / Milivoj Petrik. - Geneva : World Health Organization, 1956. - 151 p. ; 25 cm. - World Health Organization monograph series, 32. .
30 30
Sanitary Engineering.
628.07 / P448t
The training of sanitary engineers : schools and programmes in Europe and in the United States / Milivoj Petrik. - Geneva : World Health Organization, 1956. - 151 p. ; 25 cm. - World Health Organization monograph series, 32. .
30 30
Sanitary Engineering.
628.07 / P448t