Chanida Phaettut. (1999) Comparison of the dose distribution from Cobalt-60 in spinal cord from different block techniques used for the treatment of nasopharyngeal carcinoma. Mahidol University,:ม.ป.ท.Chanida Phaettut. 1999. Comparison of the dose distribution from Cobalt-60 in spinal cord from different block techniques used for the treatment of nasopharyngeal carcinoma. ม.ป.ท.:Mahidol University,;Chanida Phaettut. Comparison of the dose distribution from Cobalt-60 in spinal cord from different block techniques used for the treatment of nasopharyngeal carcinoma. ม.ป.ท.:Mahidol University, 1999. Print.