D. J. Johnson

A GEOGRAPHIC INFORMATION SYSTEM TOOL FOR AQUATIC RESOURCE CONSERVATION IN THE RED AND SABINE RIVER WATERSHEDS OF THE SOUTHEAST UNITED STATES

S. Hartley, J. Carter, Jill A. Jenkins, 2013 .

Eruption Prediction Aided by Electronic Tiltmeter Data at Mount St. Helens

J. Westphal, D. Dzurisin, Daniel J. Johnson, 1983, Science.