Bairagi, N. K Selfing and crossing concept: Applied to the strenght of blended concrete mixes/ Print by Nisith K. Bairagi - New Delhi: New Age International Publishers, 2009. - xviii, 135p.; ill., 25cm Includes Index ISBN: 9788122425819 Source: B-39554 Subjects--Topical Terms: LC Class. No.: TA439 / .B34 2009