Supoj Ua-apisitwong. (1991) Accuracy of equivalent square method in Cobalt-60 output calculation for various field sizes. Mahidol University,:ม.ป.ท.Supoj Ua-apisitwong. 1991. Accuracy of equivalent square method in Cobalt-60 output calculation for various field sizes. ม.ป.ท.:Mahidol University,;Supoj Ua-apisitwong. Accuracy of equivalent square method in Cobalt-60 output calculation for various field sizes. ม.ป.ท.:Mahidol University, 1991. Print.