Duggal, S.K. Surveying Vol.2 - 4th Ed - New Delhi McGraw Hill Education (India) Pvt.Ltd. 2013 - xviii, 488p. 20 cm. Text in English ISBN: 978-1-25-902983-7 Subjects--Facted Index Terms: CIVI Index Terms--Genre/Form: Universal Decimal Class. No.: DUG