Mining directory of Minnesota 

 - Minneapolis :  The University,  1920- 
 - v. :  maps ;  18 cm. 
 - Annual 
 - Vol. 1-, (1920)- 
<br/><br/> Issued 1923 - as "Bulletin of the university of Minnesota"  Library has : v. 70 - 72, 1967 - 1969 ; v. 75 - 76, 1972 - 1973 ; 1979 ; 1980 ; 1981 ; 1982 ; 1983 ; 1984 ; 1985 ; 1986 ; 1987 ; 1988 ; 1989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coals--Periodicals<br/>Coal miners--Periodicals<br/>Mines and mining--Periodicals<br/>Coal mines and mining--Periodicals
<br/><br/><label>Dewey Class. No.: </label>622.341097760058