Cradles of Civilization Ancient Sumerians 3500B.C.-1792B.C. Ancient Egyptians 3000B.C.-1000B.C. Ancient Indus 2500B.C.-1500B.C. Ancient Chinese 2500B.C.-1000B.C.
Bisector analysis of RR Lyrae atmosphere dynamics at different pulsation and Blazhko phases Elisabeth Guggenberger – IAU Symposium 301, August 2013 Work.
