1972
E. Bellack,
“Fluoridation engineering manual”. US Environmental Protection Agency (EPA), Washington, DC, USA, p. 94 p. : 19 fig., 1972.
H. Bouwer, Rice, R. C., Escarcega, E. D., and Riggs, M. S.,
“Renovating secondary sewage by ground water recharge with inflitration basins”, vol. no. 16060DRV. US Environmental Protection Agency (EPA), Washington, DC, USA, p. 102 p. : fig., tab., 1972.
J. A. Arboleda Valencia,
“Teoría, diseño y control de los procesos de clarificación del agua”, vol. no. 13. CEPIS (Centro Panamericano de Ingenieria Sanitaria y Ciencias del Ambiente), Lima, Peru, p. xxiv, 558 p. : fig., tab., 1972.
M. Blaho,
“U.S.T. type well pump”. Kumasi University of Science and Technology, Kumasi, Ghana, p. 9 p. : 4 fig., 1972.
R. F. Packham and Richards, W. N.,
“Water clarification by flotation - 1 : a survey of the literature”, vol. TP.87. W.R.A. - Water Research Association, Medmenham, UK, p. 32 p. : fig., tab., 1972.
1971
WHO. Regional Office for Europe -Copenhagen, DK, EURO,
“Desarrollo del programa de residuos solidos : informe sobre un Grupo de Trabajo, Bilthoven, 4-6 Mayo 1971”. CEPIS (Centro Panamericano de Ingenieria Sanitaria y Ciencias del Ambiente), Lima, Peru, p. v, 33 p., 1971.
R. P. Lalor,
“Design of non-mechanical chlorinator for small water supplies”, vol. no. 1. Duke University, Department of Forestry and Environmental Studies, Durham, NC, USA, p. 9 p. : 5 fig., 1971.
S. C. Kapumba,
“Diarrhoea”. Zambia, Ministry of Health, Health Education Unit, Lusaka, Zambia, p. 16 p.: ill., 1971.
Development Consultants Association -Cairo, EG, D.C.A.,
“Evaluation of low porosity cement pastes and concretes for desalination plants : presented before symposium on desalination League of Arab States, Cairo, 6-9 November [1971]”, presented at the 1971-01-01, Cairo, Egypt, 1971, p. 19 p. : fig., tab.