History of Science from 1946 to the 1990s /

Eitemau Tebyg

• The History of Science from 1946 to the 1990s
  gan: Spangenburg,Ray
  Cyhoeddwyd: (1999)
• The history of science from 1946 to 1990s
  gan: Spangenburg, Ray
  Cyhoeddwyd: (1994)
• History of science from 1946-to the 1990s /
  gan: Spangenburg, Ray And
• The History of Science from 1946 to the 1990's.
  gan: Ray Spangenburg
  Cyhoeddwyd: (2000)
• The history of science from 1946 to 1990
  gan: Ray Spangenburg
  Cyhoeddwyd: (1999)