books.google.it - "Sustainability Indicators " addresses the crucial issue of sustainability: how can it be measured. In contrast to the current trends in developing sustainability indicators, the authors discuss the advantages of taking a holistic and more qualitative approach....http://books.google.it/books/about/Sustainability_Indicatiors.html?hl=it&id=FZvLx3x9tYsC&q=scale&utm_source=gb-gplus-shareSustainability Indicatiors
