Gemstones and minerals /

समान संसाधन

• Prospecting for gemstones and minerals
  द्वारा: Sinkankas, John
  प्रकाशित: (1961)
• Prospecting for gemstones and minerals indal
  द्वारा: Sinkankas, John
  प्रकाशित: (1970)
• Minerals, rocks and gemstones
  द्वारा: Mykura, W.
  प्रकाशित: (1962)
• Rocks, minerals and gemstones
  द्वारा: Evans, I.O
  प्रकाशित: (1972)
• Gemstones /
  द्वारा: Hall, Cally
  प्रकाशित: (2000)