found: His Scientific results of the VSI-USGS cooperative volcanological program, 1984:t.p. (John Dvorak, U.S. Geol. Survey, Hawaiian Volcano Observatory, Hawaii)
found: nuc 86-97856: Tiltmeter and magnetometer measurements ... 1984(hdg. on DI-GS rept.: Dvorak, John J.; usage John J. Dvorak)
found: Dvorak, John. How the mountains grew, 2021:title page (John Dvorak)
found: Amazon October 31, 2022:(John Dvorak, PhD, has studied volcanoes and earthquakes around the world for the United States Geological Survey, first at Mount St. Helens in 1980, then a series of assignments in Hawaii, Italy, Indonesia, Central America and Alaska. In addition to dozens of papers published in scientific journals, Dvorak has written cover stories for Scientific American, Astronomy and Physics Today)
