Singh, R.D..
Principles and Practices of Modern Coal Mining / - 1st Ed. / - New Delhi-110002 : New Age International (P) Limited, Publishers , 1989 - xxiv, 696p :
81-224-0974-1
Geology
HZ551 / N7
Principles and Practices of Modern Coal Mining / - 1st Ed. / - New Delhi-110002 : New Age International (P) Limited, Publishers , 1989 - xxiv, 696p :
81-224-0974-1
Geology
HZ551 / N7