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	1.	Guide to the caves of Minnesota by Bayer, T. N Hogberg, R. K Series: Educational series ; 4 Material type: Text; Format: print regular print ; Audience: General; Publication details: Minneapolis : University of Minnesota, 1967 Availability: No items available. Add to cart (remove)
	2.	Kaolin Clay Resources of the Minnesota River Valley Brown, Redwood & Renville Counties, a Preliminary Report by Parham, W. E Hogberg, R. K Series: Report of Investigations ; 3 Material type: Text; Format: print regular print ; Audience: General; Publication details: Mineapolis : University of Minnesota, 1964 Availability: No items available. Add to cart (remove)
	3.	Guide to the caves of Minnesota by Bayer, T. N Hogberg, R. K Series: Educational series ; 4 Material type: Text; Format: print regular print ; Audience: General; Publication details: Minneapolis : University of Minnesota, 1967 Availability: Items available for loan: Biblioteca Pública de la UNLP (1). Place hold Add to cart (remove)
	4.	Kaolin Clay Resources of the Minnesota River Valley Brown, Redwood & Renville Counties, a Preliminary Report by Parham, W. E Hogberg, R. K Series: Report of Investigations ; 3 Material type: Text; Format: print regular print ; Audience: General; Publication details: Mineapolis : University of Minnesota, 1964 Availability: Items available for loan: Biblioteca Pública de la UNLP (1). Place hold Add to cart (remove)

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