Elements of water bacteriology : with special references to sanitary water analysis /

by Prescott, Samuel Cate n. 1872, Prescott, Samuel Cate n. 1872, Winslow, Charles Edward Amory n. 1877
Published 1931

Water bacteriology : with special reference to sanitary water analysis.

by Prescott, Samuel Cate n. 1872, Prescott, Samuel Cate n. 1872, Winslow, Charles Edward Amory n. 1877, McCrady, Mac Harvey
Published 1950

Evolución y significado de las campañas modernas de salud pública /

by Alvarado Villalobos, Judith