David A. Spencer
David A. Spencer has written at least 1 book. Their most popular book is Making Light Work: An End to Toil in the Twenty-First Century with 1 save with an average rating of -⭐.
David A. Spencer has written at least 1 book. Their most popular book is Making Light Work: An End to Toil in the Twenty-First Century with 1 save with an average rating of -⭐.
 Making Light Work Making Light Work: An End to Toil in the Twenty-First Century
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