Al –Mallah, M.K. and Al- Kader, S.A. 2012. Electro-conjugation between Klebsiella pneumoniae and Proteus mirabilis and between Agrobacterium rhizogenes R1601 and Sinorhizobium meliloti. Journal of Biotechnology Research Center (JOBRC). 6, 1 (Jan. 2012), 80–87. DOI:https://doi.org/10.24126/jobrc.2012.6.1.206.