Biblio

P. Morgan, “The Arborloo book : how to make a simple pit toilet and grow trees or make humus for the garden”. Stockholm Environment Institute (SEI), Stockholm, Sweden, p. 16 p. : photogr., 2004.

P. Morgan, “An ecological approach to sanitation in Africa : a compilation of experiences : the EcoSan book”. Aquamor, Harare, Zimbabwe, p. ca. 262 p. : fig., photogr., 2004.

WHO -Geneva, CH, World Health Organization, Morgan, P., and Harare, Z. W. Blair Rese, “Appropriate sanitation for very low income communities. Volume 1. Background reader for a workshop in Harare, Zimbabwe, November 1991”. World Health Organization (WHO), Geneva, Switzerland, p. 36 p. : ill., tab., 1992.