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Non abbiamo ancora una biografia di Leonard James Spencer.
Pubblicato in Inglese
Per saperne di più: Open Library (si apre in una nuova scheda)
Precious Stones, a Popular Account of Their Characters, Occurrence and Applications, with an Introduction to Their Determination, for Mineralogists, Lapidaries, Jewellers, etc. with an Appendix on Pearls and Coral
2022
Precious Stones, a Popular Account of Their Characters, Occurrence and Applications, with an Introduction to Their Determination, for Mineralogists, ... Etc. with an Appendix on Pearls and Coral
2018
The world's minerals
2023