ltOBERT8, 
Michael 
Gustavus Adolphus. A history or Sweden 1 611 -1632. 
London [usw.l: Longmans, Green (1953 
Vol. 1 • 
80 
1.1611-1626. 1.publ. 1953. XIV, 5ö5 s. 
2. 1626-1632. 1.publ. 1958. XIII, 848 s.