"duggal, s. "
surveying: / s. duggal - 2 ed. - new delhi : tata mcgraw hill 2006. - "x, 440p.; 23 cm."
0-07-053471-3
--
526. 9 dug
surveying: / s. duggal - 2 ed. - new delhi : tata mcgraw hill 2006. - "x, 440p.; 23 cm."
0-07-053471-3
--
526. 9 dug