United states reference publications : a guide to the current reference publications of the fedderal government. /

Eitemau Tebyg

• Guide to reference books. /
  gan: Winchell, Constane M.
  Cyhoeddwyd: (1951)
• Guide to reference material
  gan: Walford, A J
  Cyhoeddwyd: (1970)
• Guide to reference books
  gan: Winchell, Constance M
  Cyhoeddwyd: (1967)
• Introduction to reference books. /
  gan: Roberts, A. D.
  Cyhoeddwyd: (1951)
• Reference material for young people. /
  gan: Lock, Muriel
  Cyhoeddwyd: (1971)