Sam Sina. 2004. Performance of health center personnel on health promotion in primary school in Suphanburi province, Thailand. Field of Study Primary Health Care Management, Mahidol University;
Sam Sina. (2004) Performance of health center personnel on health promotion in primary school in Suphanburi province, Thailand . Mahidol University/Bangkok.
Sam Sina. Performance of health center personnel on health promotion in primary school in Suphanburi province, Thailand. . Bangkok:Mahidol University, 2004.
Sam Sina. (2004) Performance of health center personnel on health promotion in primary school in Suphanburi province, Thailand . Mahidol University/Bangkok.