Making a clock- accurate sundial

Míreanna Comhchosúla

• Biological clocks
  le: Manorama, Jafa
  Foilsithe: (1979)
• The quantum beat : the physical principles of atomic clocks
  le: Major, F. G.
  Foilsithe: (1998)
• Clock of Ages: Why We Age-How We Age-Winding Back the Clock
  le: Medina, John. J
  Foilsithe: (1996)
• Five Clocks, with and Introduction
  le: Joos, Martin
  Foilsithe: (1967)
• Biological clock: two views
  le: BrownJr, Frank A
  Foilsithe: (1970)