F. Shahzad, M. Shafee, F. Abbas, S. Babar, M. M. Tariq, and Z. Ahmad. "ISOLATION AND BIOCHEMICAL CHARACTERIZATION OF RHIZOBIUM MELILOTI FROM ROOT NODULES OF ALFALFA ( MEDICO SATIVA)." Journal of Animal and Plant Sciences, vol. 22, no. 2, 2012, pp. 522-524.