By Gupta AP   Antil RS   Narwal RP   in Archives of Agronomy and Soil Science

ISSN:0365-0340|50|4-5|389-395

Taylor & Francis Ltd‎(2004)‎

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By Antil R.S.   Gupta A.P.   Narwal R.P.   in Urban Water

ISSN:1462-0758|3|4|299-302

Elsevier‎(2001)‎

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By Solon E.   Gupta A.P.   Gaugler R.   Gabriel R.M.   in Evaluation and Program Planning

ISSN:0149-7189|20|3|335-343

Elsevier‎(1997)‎

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