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	1.	No cover image available Valders-two creeks, Wisconsin, revisited : the valders till is most likely post-Twocreekan by Black, Robert Material type: Article; Format: print Language: Eng In: Geological Society of America bulletin 91(12), part I, 1980, p. 713-723: : ill., carte, rés.(Angl) Availability: No items available.
	2.	No cover image available Late Woodfordian and Greatlakean history of the Green Bay Lobe, Wisconsin : discussion and reply by Black, Robert Mickelson, David McCartney, Carol Material type: Article; Format: print Language: Eng In: Geological Society of America bulletin 94(7), 1983, p. 936-938: : ill. Availability: No items available.
	3.	No cover image available Ecole et société à Florence aux XIVe et XVe siècles by Black, Robert Material type: Article; Format: print Language: Fre In: Annales: histoire, sciences sociales 4, 2004, p. 827-847 Availability: No items available.

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