Chattopadhyay,B.C, & Maity,J. Ground control and improvement techniques. Peedot.
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Chicago-čujuhus (17. p.)
Chattopadhyay,B.C, juo Maity,J. Ground Control and Improvement Techniques. Howrah: Peedot.
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MLA-čujuhus (9. p.)
Chattopadhyay,B.C, juo Maity,J. Ground Control and Improvement Techniques. Peedot.
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