A review of geomagnetism research in NOAA 1970-1971 
ed by Donald E. Watson 
 - Washington :  U.S. Dept. of Commerce,  1972 
 - iv,66 p. ;  ill. ;  28 cm. 
 - NOAA technical report ERL ;  no. 223- ESL 19 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomagnetism--measurement
<br/><br/><label>Dewey Class. No.: </label>538.7