Volume 79, Number 3-4 (1972)
Issue cover date: December 1972
Front Matter
General Interest Articles
Philosophy of Environmental Regulation p. 131-134
Richard H. Stanley
Engineering Solutions to Environmental Problems p. 135-137
Richard B. Miller
Engineering Solutions to Recycling Problems p. 141-144
O. N. Carlson
Research
Automatic Recording of Conductance Titrations p. 97-98
George E. Knudson and David Langhus
Feasibility of Commercial Vegetable Production in Western Iowa as a Boost to Agricultural and Rural Development p. 99-100
M. LeRon Robbins and Kermit J. Hildahl
The Absorption of Chlorinated Hydrocarbon Insecticides by Frog Skin p. 101-104
Timothy O. Kaiser and Jewett Dunham
Notes on Snail Feeding Behavior of Anaxjunius (Drury): (Odonata) p. 105-106
D. W. Sievers and A. C. Haman
Age, IQ Effects and Reliability of a Stereoscopic Test for Field Dominance p. 107-110
David M. Pierce
A Preliminary Stratigraphic Study of the Galena Group of Winneshiek County, Iowa p. 111-122
C. O. Levorson and A. J. Gerk
X-Ray Diffraction Analysis of the Pennsylvanian Clays of Mahaska County p. 123-126
Harold Dean Anderson
New Conceptual Design of The ISU Tornado-Simulation Wind Tunnel p. 127-130
C. T. Hsu
Spill Protection at Procter and Gamble's Iowa City Plant p. 138-140
H. E. Brown, W. S. Cameron, and R. G. Bennett
Back Matter
