TOXICITY OF Piper guineense SCHUM AND THONN AND Chlorpyrifos POWDERS FOR THE CONTROL OF Callosobruchus subinnotatus (Pic.) ON STORED Vigna subterranea (L.) Verdcourt IN GOMBE STATE, NIGERIA. FJS [Internet]. 2021 Jul. 7 [cited 2025 Sep. 11];5(2):358-64. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/625