Development of an interactive system to study sub-lethal effects of pollutants on the behavior of organisms /

"Grant no. R803244."

Effects of method of error interruption on student performance at interactive terminals /

Originally presented as the author's thesis (M.A.), University of Illinois at Urbana-Champaign.

Margetts's Longitude tables for correcting the effects of parallax and refraction, on the observed distance taken between the moon and the sun or a fixed star ... and the corresponding time at Greenwich, found by inspection.

Mode of access: Internet.