Kakar Z- ul- haq, Parveen S, Khattak SG, Saleem Z. Effect of Different Types of Surfectants on Zinc Efficiency in Spinach Yield. ijsar [Internet]. 2014 Jun. 16 [cited 2024 Dec. 22];1(2):45-51. Available from: https://archive.conscientiabeam.com/index.php/70/article/view/211