International seminar on prospects, techniques and economics of coal washing in India: Dec 18,19,20, 1978 Vigyan Bhavan , New Delhi / India.Bureau of Public Enterprises

By: Material type: TextTextLanguage: English Publication details: New Delhi, 1978Description: 200p col ill; 30cmSubject(s): DDC classification:
  • 338.4766262 IND
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