Has anyone ever defined the eras in doping for running/track and field?

Here is a starting point:
No testing - year around usage steroids/testosterone (1962-1975)
Competition testing only - steroids/testosterone (1976-1989),
Off season/smaller dosing of steroids/testosterone (1990-),
HGH pre-testing era (1985-2003)
HGH testing period (2004-)
Non-tested blood doping (1970-1986)
Illegal/limited blood doping (1987-)
EPO pre-testing (1990-1999)
EPO usage post testing (2000-)
Stimulants (1936-).