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Letter from Gustavus Brander about cobalt
Letter from Gustavus Brander about cobalt
Letter from Francis Beauchamp about cobalt
Letter from Francis Beauchamp about cobalt
Letter from Dr Linden about cobalt mines in parts of Wales
Letter from Dr Linden about cobalt mines in parts of Wales
Letter from Rev M Wingate Pullen about cobalt
Letter from Rev M Wingate Pullen about cobalt
Letter from Dr Lewis about cobalt
Letter from Dr Lewis about cobalt
Letter from Nicholas Crisp about cobalt
Letter from Nicholas Crisp about cobalt
Letter from Michael Clarke about cobalt
Letter from Michael Clarke about cobalt
Letter from Francis Beauchamp about cobalt
Letter from Francis Beauchamp about cobalt
Letter from Francis Beauchamp about cobalt samples
Letter from Francis Beauchamp about cobalt samples
Letter from Francis Beauchamp about specimens of cobalt, copper ores and mandicks
Letter from Francis Beauchamp about specimens of cobalt, copper ores and mandicks
Letter from Francis Beauchamp about cobalt
Letter from Francis Beauchamp about cobalt
Letter from Charles Powell about cobalt
Letter from Charles Powell about cobalt
Letter from John Mooring about cobalt
Letter from John Mooring about cobalt
Letter from John Mooring about cobalt, specimen sent from Plymouth
Letter from John Mooring about cobalt, specimen sent from Plymouth
Letter from J Peat about cobalt and zinc
Letter from J Peat about cobalt and zinc
Account of experiments on cobalt by Michael Morris
Account of experiments on cobalt by Michael Morris
Letter from Dr Linden about cobalt
Letter from Dr Linden about cobalt
Letter from Charles Moreton, Nicholas Crisp and Frederick Brandenburgh about cobalt
Letter from Charles Moreton, Nicholas Crisp and Frederick Brandenburgh about cobalt
Extract of letter from Peter Ornskold about cobalt and bismuth ore
Extract of letter from Peter Ornskold about cobalt and bismuth ore
Notes on cobalt, zaffre and smalt
Notes on cobalt, zaffre and smalt