Removal of Parathion from Aqueous Media Throughp-tert-Butylcalix[4]arene Based Modified Silica. Pak. J. Anal. Environ. Chem. [Internet]. 2013 Dec. 2 [cited 2025 Nov. 5];14(2):28-37. Available from: https://pjaec.pk/index.php/pjaec/article/view/352