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Rock Fall EngineeringBy Duncan C. Wyllie
ITU-T X.460
ITU-T M.1015
BS EN 12881-2:2005+A1:2008
ITU-T M.1030
ITU-T Q.71
ITU-T Q.8
ITU-T Q.2
ITU-T T.413
ITU-T Q.755
ITU-T X.210
ITU-T G.981
ITU-T T.521 AMD 1
ITU-T G.441
ITU-T Q.952
ITU-T T.71
AS (E)B509-1943
NFPA (Fire) 560
ITU-T Q.2931 AMD 4
ITU-T F.30
ITU-T Q.686
AS H51-1950
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