Inside Out Library · ExploreTests of the pumps and wells of the University of Illinois (1906)Enger, Norval · leaf 267. Id. Line. 3 Fig. 2 10. … PLATE 3.Pumping machinery · Wells · ThesesInternet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.More pictures from Tests of the pumps and wells of the University of IllinoisMore like this