S. USHA, and T. PADMAVATHI. “EFFECT OF PLANT GROWTH PROMOTING MICROORGANISMS FROM RHIZOSPHERE OF PIPER NIGRUM L”. International Journal of Pharma and Bio Sciences 4, no. 1 (March 31, 2013): 835–846. Accessed July 23, 2026. https://ijpbs.net/index.php/journal/article/view/2098.