00434nam a2200169   4500000000100000008004100001260003500042653001900077653001500096653002500111100001100136700001200147245005900159300001100218050001700229020001800246       2000                            d  bEarthscan PublicationsaLondon10aSustainability10aIndicators10aManagement of change1 aBell S1 aMorse S00aSustainability indicators : measuring the immeasurable  a175 p.  a110.26 BEL b  a1-85383-498-X