@mastersthesis{icrisat2528,
          school = {Andhra Pradesh Agricultural University},
            year = {1983},
           title = {Evaluation of different cropping systems for alfisols at different fertility levels on an operational scale},
          author = {J K Kimemia},
             url = {http://oar.icrisat.org/2528/},
        abstract = {A number of different cropping systems are practiced
by farmers in the semi-arid tropics. Research has been carried out on individual cropping systems for some time. This present study was taken up to compare the various cropping systems possible under alfisol situation...}
}