Changes

* African Development Fund (2005). [https://www.afdb.org/fileadmin/uploads/afdb/Documents/Project-and-Operations/Ghana_-_Accra_Sewerage_Improvement_Project_ASIP_-_Appraisal_Report.pdf Accra Sewerage Improvement Project (ASIP). Appraisal Report]. Infrastructure Department Central and West Regions. Abidjan, CI.:Available at: [http://www.afdb.org afdb.org]

* Boot, N. L. and Scott, R. E. (2008). [https://repository.lboro.ac.uk/articles/journal_contribution/Faecal_sludge_in_Accra_Ghana_problems_of_urban_provision/9439199/ Faecal Sludge in Accra, Ghana: Problems of Urban Provision]. Proceedings: Sanitation Challenge: New Sanitation Concepts and Models of Governance. Wageningen, NL.

* Chowdhry, S. and Koné, D. (2012). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/1662 Business Analysis of Fecal Sludge Management: Emptying and Transportation Services in Africa and Asia]. Bill & Melinda Gates Foundation, Seattle, US.:Available at: [http://www.susana.org/library susana.org/library]

* Strande, L., Ronteltap, M. and Brdjanovic, D. (Eds.) (2014). [https://www.susana.org/en/knowledge-hub/resources-and-publications/library/details/3591 Faecal Sludge Management. Systems Approach for Implementation and Operation]. IWA Publishing, London, UK.:Available at: [http://www.sandec.ch sandec.ch]

* U.S. EPA (1994). [https://www.epa.gov/sites/production/files/2018-11/documents/guide-septage-treatment-disposal.pdf Guide to Septage Treatment and Disposal]. EPA/625/R-94/002. U.S. Environmental Protection Agency, Office of Research and Development, OH, US.