VIAK -Vallingby, SW

Vallingby, S.W.V.I.A.K.-, ET, E.- & Stockholm, S.E.S.I.D.A.-, 1984. Remote sensing for water resources development : a demonstration and training study, Vallingby, Sweden: VIAK. Available at: https://www.ircwash.org/sites/default/files/212.1-84RE-4091.pdf.