000			00691nam a2200205Ia 4500
008			170503s9999||||xx |||||||||||||| ||und||
080			_a551.7(775)
245		0	_aDefinition of Wisconsinan Stage / _cBy John C. Frye ... [et al.].
260			_aWashington : _bUnited States Government Printing Office, _c1968
300			_a22 p. --
336			_2isbdcontent _aTexto (visual)
337			_2isbdmedia _3Impreso _asin mediación
490			_aGeological Survey Bulletin
490			_v 1274-E
500			_aFecha real de registro 20-03-1969
650			_aEstratigrafía - Wisconsin
942			_2cdu
942			_cBK
999			_c24097 _d24097