Hazard, Daniel Lyman  <br/><br/>
Directions for magnetic measurements 
Daniel Lyman Hazard 
 - 3rd ed. 
 - Washington, D. C.  United States Government Printing Office  1957 
 - iv+129p.  illus 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnetic Measurements
<br/><br/><label>Universal Decimal Class. No.: </label>550.380.14  / HAZ