Kakerissa, Yance. “Testing of the California Bearing Ratio (CBR) on the Bottom Foundation (LPB) Airport of Okaba District”. ENDLESS: INTERNATIONAL JOURNAL OF FUTURE STUDIES 5, no. 3 (September 22, 2022): 64–80. Accessed September 9, 2026. https://endless-journal.com/index.php/endless/article/view/93.