kw.\*:("YORHSHIRE")
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GEOCHEMISTRY, MICROPALAEONTOLOGY AND ORIGIN OF THE MIDDLE LIAS IRONSTONES IN NORTHEAST YORKSHIRE (GREAT BRITAINCATT JA; GAD MA; LE RICHE HH et al.1971; CHEM. GEOL.; NLD; 1971(7), VOL. 8, NUM. 0001, P. 61 A 76Miscellaneous
