Jakma, F.F.G.M.

Schellinkhout, A. & Jakma, F.F.G.M., 1991. Ervaring met anaerobe zuivering in Bucaramanga, Colombia, Amersfoort, The Netherlands: DHV. Available at: https://es.ircwash.org/sites/default/files/341.5-91ER-8894.pdf.