Umrotun, U, Universitas Muhammadiyah Surakarta, Indonesia

• Vol 5, No 1 (1991): July 1991 - Research Articles
  Development of Basic Rusal Services: An Operational Approach
  Abstract  PDF
• Vol 15, No 2 (2001): December 2001 - Research Articles
  Departicipation of Youth in Agricultural Sector (Case Study at Delanggu Village, Delanggu, Klaten)
  Abstract  PDF