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Direct linkHoffmann, Heiko; Tausch, Michael W. – Journal of Chemical Education, 2018
An inexpensive self-made apparatus for photochemical experiments was developed and has been tested to facilitate the inclusion of photoreactions in undergraduate teaching laboratories despite budget constraints. The core setup allowing the selection of defined wavelengths in the visible and UV regions is made of commercially available components…
Descriptors: Chemistry, Science Instruction, Undergraduate Students, Teaching Methods
American School Board Journal, 1973
Lists several safety features for school buses and their approximate costs. School districts often miss out on these features if they operate under a low-bid-takes-all purchasing system. (Author/WM)
Descriptors: Accident Prevention, Bus Transportation, Costs, Equipment
Powell, John; And Others – Coll Univ Bus, 1970
Descriptors: Campuses, Costs, Higher Education, Law Enforcement
