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![Cover for Blaine R. Worthen · Evaluating Educational and Social Programs: Guidelines for Proposal Review, Onsite Evaluation, Evaluation Contracts, and Technical Assistance - Evaluation in Education and Human Services (Paperback Book) [Softcover reprint of the original 1st ed. 1987 edition] (2012)](https://imusic.b-cdn.net/images/item/original/220/9789401174220.jpg?blaine-r-worthen-2012-evaluating-educational-and-social-programs-guidelines-for-proposal-review-onsite-evaluation-evaluation-contracts-and-technical-assistance-evaluation-in-education-and-human-services-paperback-book&class=scaled&v=1614878032)