Collector's guide to minerals and gemstones

समान संसाधन

• A Collector's Guide to Minerals and Gemstones
  द्वारा: Boegel,Hellmuth
  प्रकाशित: (1968)
• Gemstones and minerals /
  द्वारा: Sinkankas, John
  प्रकाशित: (1961)
• Prospecting for gemstones and minerals
  द्वारा: Sinkankas, John
  प्रकाशित: (1961)
• Rocks, minerals and gemstones
  द्वारा: Evans, I.O
  प्रकाशित: (1972)
• Minerals, rocks and gemstones
  द्वारा: Mykura, W.
  प्रकाशित: (1962)