Introduction to Intellectual PropertyDavid Kline, David Kappos, Kerry L. Bundy, Randall E. Kahnke, Robert G. Krupka, Kerry Bundy, Randall Kahnke, Robert Krupka · First published 2021Open the Tome
An evaluation of the shelter potential in mines, caves and tunnelsRobert A. Krupka · First published 1965Open the Tome
Overcrowding potential, final reportRobert A. Krupka, Hudson Institute · First published 1964Open the Tome
