Παρόμοια τεκμήρια

• The principles of scientific research /
  ανά: Freedman, Paul
  Έκδοση: (1960)
• An introduction to scientific research /
  ανά: Wilson, E. Bright
  Έκδοση: (1952)
• An introduction to scientific research /
  ανά: Wilson, E. Bright 1908-
  Έκδοση: (1990)
• Federal fundes for research, development, and other scientific activities : fiscal years 1963, 1964, and 1965 /
  Έκδοση: (1965)
• Tactics of scientific research : evaluating experimental data in psychology /
  ανά: Sidman, Murray
  Έκδοση: (1960)