Herbert, W. H., <br/><br/>
Magnetic results in western canada / 
By w. h. herbert and j. h. mcknight 
 - xxix, 362 páginas 
 - Bulletin / topographical survey of canada, department of the interior ;  52 .
<br/><br/> A la cabeza de la portada: canada, department of interior, topographical survey of canada 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomagnetismo
<br/><br/><label>LC Class. No.: </label>QC815.2  / H47