Naturally speaking a dictionary of quotations on biology,

Geahča maid

• Naturally speaking : a dictionary of quotations on biology, /
  Almmustuhtton: (2001)
• The Merriam-Webster Dictionary of Quotations /
  Dahkki: Merriam-Webster, Inc
  Almmustuhtton: (2004)
• The Oxford dictionary of quotations/
  Almmustuhtton: (1968)
• Dictionary of Quotations : Collected and Arranged and with Comments
  Dahkki: Evans, Bergen, 1904-
  Almmustuhtton: (1978)
• The Penguin dictionary of quotations/
  Dahkki: Cohen, J.M
  Almmustuhtton: (1968)