Rocks, minerals and gemstones

समान संसाधन

• Minerals, rocks and gemstones
  द्वारा: Mykura, W.
  प्रकाशित: (1962)
• Gemstones and minerals /
  द्वारा: Sinkankas, John
  प्रकाशित: (1961)
• Prospecting for gemstones and minerals
  द्वारा: Sinkankas, John
  प्रकाशित: (1961)
• Minerals rocks and gemstones tr by W Mykora /
  द्वारा: Borner, Rudolf
  प्रकाशित: (1962)
• Gemstones /
  द्वारा: Hall, Cally
  प्रकाशित: (2000)