Mining Challenges of the 21st century /

समान संसाधन

• Mining /
  द्वारा: Boky, B.
  प्रकाशित: (1967)
• Mining
  द्वारा: Boky, B
  प्रकाशित: (1967)
• Mining /
  द्वारा: Boky. B.
  प्रकाशित: (1967)
• India in 21st century : challenges and opportunities/
  द्वारा: Bhargava, Gopal
  प्रकाशित: (1993)
• Safety in opencast mining /
  द्वारा: Melnikov , N
  प्रकाशित: (1969)