P. B. Holman

Natural background radiation in Canada

J. Carson, R. Grasty, J M Carson, 1984 .

An airborne gamma ray snow survey of a forest covered area with a deep snowpack

T. Carroll, R. Grasty, J. Glynn, 1988 .

Transportable calibration pads for ground and airborne gamma-ray spectrometers

R. Grasty, P. B. Holman, Y. Blanchard, 1991 .

Radioactivity map of Canada

A. G. Darnley, J. Carson, R. Grasty, 1986 .

Terrestrial radioactivity and gamma-ray exposure in the United States and Canada

Joseph S. Duval, A. G. Darnley, J. Carson, 2005 .