Directions for magnetic measurements
Hazard, Daniel L
Directions for magnetic measurements Daniel L Hazard - 3rd ed. - Washington U. S. Department of Commerce 1930 - vi, 129p. - U.S. department of commerce; 166 .
Magnetism
538 / HAZ
Directions for magnetic measurements Daniel L Hazard - 3rd ed. - Washington U. S. Department of Commerce 1930 - vi, 129p. - U.S. department of commerce; 166 .
Magnetism
538 / HAZ