created by (212 episodes, 1972-1981)
written by (4 episodes, 1972-1976)
story by (2 episodes, 1973)
teleplay by (1 episode, 1975)
written by (24 episodes, 1974-1981)
(25 episodes, 1974-1981)
written by (21 episodes, 1975-1981)
story by (1 episode, 1977)
teleplay by (1 episode, 1977)
written by (20 episodes, 1975-1980)
written by (18 episodes, 1972-1978)
(20 episodes, 1972-1978)
teleplay by (1 episode, 1973)
written by (8 episodes, 1979-1981)
teleplay by (1 episode, 1979)
written by (8 episodes, 1972-1974)
written by (8 episodes, 1975-1977)
written by (8 episodes, 1978-1981)
written by (4 episodes, 1976-1978)
teleplay by (2 episodes, 1975-1976)
story by (1 episode, 1975)
story editor (1 episode, 1978)
written by (4 episodes, 1973-1974)
written by (5 episodes, 1974-1977)
written by (5 episodes, 1975-1981)
written by (4 episodes, 1973-1978)
teleplay by (2 episodes, 1973-1975)
written by (2 episodes, 1973-1975)
written by (4 episodes, 1975-1977)
written by (4 episodes, 1978-1981)
written by (3 episodes, 1972-1978)
written by (3 episodes, 1972-1976)
written by (3 episodes, 1973-1977)
written by (2 episodes, 1974-1975)
written by (3 episodes, 1974-1975)
written by (3 episodes, 1978-1979)
written by (3 episodes, 1981)
story by (2 episodes, 1973-1976)
written by (2 episodes, 1973-1974)
written by (2 episodes, 1973)
story by (1 episode, 1974)
teleplay by (1 episode, 1974)
written by (2 episodes, 1975-1977)
written by (2 episodes, 1975-1976)
written by (1 episode, 1980)
written by (1 episode, 1972)
written by (1 episode, 1973)
written by (1 episode, 1974)
written by (1 episode, 1975)
written by (1 episode, 1976)
written by (1 episode, 1977)
written by (1 episode, 1978)
story by (1 episode, 1978)
teleplay by (1 episode, 1978)
written by (1 episode, 1979)
story by (1 episode, 1979)
written by (1 episode, 1981)