1.
Calibration of a Manual Cone Penetrometer using a Digital Penetrologger. Am. J. Agric. Sci. Eng. Technol. [Internet]. 2017 Aug. 10 [cited 2026 Jul. 29];1(1):40-8. Available from: https://e-pallipublishers.com/index.php/ajaset/article/view/23