4. did slaves signed contracts agreeing to work for a certain period of time before they were released from service

What were some benefits of the lewis and clark expedition?

Mark s. fleisher identified which traits as essential to effective work in corrections?

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.