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A. Bahri ; RURAL ENGINEERING RESEARCH CENTER ARIANA TUN ; Transactions of the 15th world congress of soil science, ISSS, Acapulco, MEX, 1994 (1994) | 1994Soils in arid and semi-arid areas often have a low-organic content. Consequently, there are needs for improvement of soil fertility. A way to solve this problem is to use sewage sludge in agriculture when other organic matter sources are lacking[...]
