Seminar on Field Techniques for Mineral Investigation, held in Iran, September 13 to October 1, 1965. Central Treatry Organization. Central Treatry Organization. Prospecting Congresses. Mines and mineral resources Iran Congresses. Mines and mineral resources Turkey Congresses. TN270.A1 C46 1965 622.1561 CES Includes bibliographical references. Ankara : Central Treatry Organization, 1966. 1966. 1966 Text 173 p. : eng Iran Turkey