00553cam a22001934a 4500003001000000005001700010008004100027040002500068041000800093044000800101080001000109100001600119245009500135260004600230300002700276650002100303650001600324655001900340AR-SsjUIB20250710162909.0250429s1968 xxk 000 0 eng d aAR-SsjUIBcAR-SsjUIB0 aeng axxk a622.21 aEarl, Bryan10aCornish mining :bthe techniques of metal mining in the west of england, past and present. aGran Bretaña :bBradford Barton,c1968. a118 p. :bil. ;c21 cm 7aInglaterra2lemb 7aMinas2lemb 7aLibro2unescot