Yawarat PorapakkhamDonaldson, Peter J.Thavisak SvetsreniMahidol University. Institute for Population and Social Research2011-02-142011-02-141973-04-191973-04-19http://imsear.searo.who.int/handle/123456789/129344engInstitute for Population and Social Research: Mahidol UniversityContraceptionField workerFamily planning field worker performance in ThailandReport, research