@article{icrisat3339,
            year = {1994},
           title = {UNCED Agenda 21: The New Challenges for Soils Research},
          volume = {42},
          number = {4},
           pages = {516--524},
          author = {S M Virmani},
       publisher = {Indian Sociely of Soii Science},
         journal = {Journal of the Indian Sociely of Soii Science},
             url = {http://oar.icrisat.org/3339/}
}