Ventura, Rey Underground in Japan/ Rey Ventura. - Quezon City: ADMU Press, c2006. - vii, 162 pages; 20 cm. ISBN: 9715504922 Subjects--Topical Terms: Japan - Emigration and immigration - Social aspects. Employment in foreign countries.Migrant workers - Japan. Dewey Class. No.: DFil 304.852 / V56