There has been data ("Contract Farming and the Development of Smallholder Agricultural Businesses: Improving markets and value chains in Tanzania (Earthscan Food and Agriculture) - ISBN-13 978-1-317-30998-7") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Wed Mar 11 23:17:51 2020, so the data displayed here has been removed .