  Combined results on b-hadron lifetimes, b-hadron production rates, B^0_d -
\bar{B^0_d} and B^0_S - \bar{B^0_s} oscillations, the decay width difference
between the mass eigenstates of the B^0_s - \bar{B^0_s} system, the average
number of c and \bar{c} quarks in b-hadron decays, and searches for CP
violation in the B^0_d - \bar{B-0_d} system are presented. They have been
obtained from published and preliminary measurements available in Summer 2000
from the ALEPH, CDF, DELPHI, L3, OPAL and SLD Collaborations. These results
have been used to determine the parameters of the CKM unitarity triangle.
