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In case.
Accompanied by 1 chart: Comparing proving & improving approaches.
Knowledge
Resources
Toolkit.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Proving and improving : a quality & impact toolkit for social enterprise by Lisa Sanfilippo. ISBN 1899407995. Published by New Economics Foundation in 2005. Publication and catalogue information, links to buy online and reader comments.