ESTABLISHMENT OF PROFICIENT IN VITRO MASS MULTIPLICATION AND REGENERATION SYSTEM FOR ENHANCED PRODUCTION OF STEVIOSIDE AND REBAUDIOSIDE A IN STEVIA REBAUDIANA - M. B. Tufail; G. Mustafa; F. A. Joyia; Z. Mushtaq; Ghazala; M. S. Khan (Journal of Animal and Plant Sciences, 2019)