Pipes, W. O. (1982). Sampling frecuency microbiological drinking water regulations. Washington: Office of Drinking Water.
Citación estilo ChicagoPipes, Wesley O. Sampling Frecuency Microbiological Drinking Water Regulations. Washington: Office of Drinking Water, 1982.
Cita MLAPipes, Wesley O. Sampling Frecuency Microbiological Drinking Water Regulations. Washington: Office of Drinking Water, 1982.
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