John G. The effect of Bacillus Pumilus on the free swell and atterberg limits of black cotton soil for use in road subgrades. JOBASR [Internet]. 2024 Mar. 30 [cited 2026 Apr. 1];2(1):135-41. Available from: https://jobasrfudutsinma.com/index.php/ojs-files/article/view/303