New genera and species of North American Miriae (Hemiptera). Harry H. Knight. 421
Correction of observed ratio for errors associated with ion current collection and amplification in dual collector mass spectrometers. Jennings Capellen and Harry J. Svec. 427
A method of applying extremal methods to problems of electrical resistance. L. Jackson Laslett. 431
Review of Ephemeridae (Ephemeroptera) in the Missouri River watershed with a key to the species. E.W. Hamilton. 443
Responses of rose plants to cane coating with melted paraffin wax. S.J. Toy and J.P. Mahlstede. 475
Seasonal occurrence of Pythium graminicolum on roots of field-grown corn. R.O. Hampton and W.F. Buchholtz. 489
"Iowa State College Journal of Science 33.4,"
Iowa State Journal of Research: Vol. 33
, Article 1.
Available at: https://lib.dr.iastate.edu/iowastatejournalofresearch/vol33/iss4/1