621.80222 BHA 17223 17233 19472 24765 34626
Bhatt, N. D. Machine drawing / by N. D. Bhatt and V. M. Panchal. - 12th ed.. - Anand : Charotar, 1985 xv, 214p. ill. Includes index. * Engineering drawing Scew threads Technical drawing * Panchal, V. M. * Title
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