Παρόμοια τεκμήρια

• Research centers directory /
  Έκδοση: (1965)
• A directory of governmental, public, and urban affairs research centers in the United States /
  ανά: Haro, Robert P.
  Έκδοση: (1969)
• Directory of european research and development 1997.
  Έκδοση: (1997)
• Research, U.S.A. : knowledge for the future /
  ανά: Crewe, Albert V.
  Έκδοση: (1964)
• Directory of special libraries and information centers /
  Έκδοση: (1963)