BETA*

  GAMMA*

  DELTA*

EPSILON*

ZETA

ETA

THETA*

IOTA*

KAPPA*

  LAMBDA

MU*

NU

XI

OMICRON

  PI

  RHO

  SIGMA

  TAU

  UPSILON*

  PHI

  CHI*

  PSI

  OMEGA

  ALPHA ALPHA

  ALPHA BETA

  ALPHA GAMMA

  ALPHA DELTA

  ALPHA EPSILON

  ALPHA ZETA*

  ALPHA ETA

  ALPHA THETA

  ALPHA IOTA

  ALPHA KAPPA

  ALPHA LAMBDA

  ALPHA MU

  ALPHA NU       

  ALPHA XI

  ALPHA OMICRON    

  ALPHA PI

  ALPHA RHO

  ALPHA SIGMA

  ALPHA TAU

  ALPHA UPSILON

  ALPHA PHI

November 10, 1967

March 11, 1969

October 21, 1970

March 3, 1972

February 24, 1973

February 21, 1975

October 19, 1975

October 4, 1975

October 29, 1975

October 16, 1976

October 16, 1976

May 7, 1977

February 12, 1978

April 14 1978

April 3, 1978

April 25, 1979

November 21, 1980

February 4, 1981

April 29, 1981

April 17, 1982

May 1, 1982

April 19, 1983

March 29, 1984

September 23, 1986

February 15, 1989

February 15, 1989

March 15, 1989

February 12, 1990

February 1, 1991

April 26, 1991

May 11, 1991

November 21, 1991

November 21, 1991

September 30, 1993

April 21, 1994

May 4, 1996

May 7, 1998

February 5, 1999

February 23, 2001

October 4, 2001

November 9, 2001

February 27, 2003

April 11, 2003

April 15, 2003

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