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Global heritage stone
worldwide examples of heritage stones
Geological Society special publication ; no. 486
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Chemistry and Biology of Pteridines
Pteridines and Folic Acid Derivatives. Proceedings of the I...
Chemistry and Biology of Pteridines ; 8
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Annual report of the Board of Regents of the Smithsonian In..
United States congressional serial set ; serial set no. 12486;House document / 87th Congress, 2nd session. House ; no. 259, pt. 1