Pawlowski, Z.S. Hookworm infection and anaemia approaches to prevention and control Z.S. Pawlowski, G.A. Schad; G.J. Stott. - Geneva World Health Organization 1991 - vi, 96p.: ill.; 23cm. ISBN: 92 - 4 - 154415 - 5. Dewey Class. No.: 614.5554 / P27H