Testing concrete. Part 124. methods for analysis of hardened concrete Methods for analysis of hardened concrete - London : BSI, 1998 - iv, 24 p. : ill. ; 30 cm - British standard ; BS 1881 : Part 124 : 1988 . 'British Standard, BS 1881 - 124 : 1988'--Cover ISBN: 0580166171 RM 421.12 Subjects--Topical Terms: Concrete--Testing--Standards