Abbas, M., M. Aslam, J. A. Shah, N. Depar, and M. Y. Memon. “RELATIVE GROWTH RESPONSE OF HYDROPONICALLY GROWN WHEAT GENOTYPES TO DEFICIENT AND ADEQUATE PHOSPHORUS LEVELS”. Pakistan Journal of Agriculture, Agricultural Engineering and Veterinary Sciences, vol. 32, no. 2, Dec. 2016, pp. 169-81, https://pjaaevs.sau.edu.pk/index.php/ojs/article/view/114.