Planting and harvesting peanuts and wheat; milking cows; factory processing of peanut butter, baking bread, bottling milk; supermarket checkout counter; finished snack—all are clearly illustrated in photos captioned with a brief text. Robbins's technique of tinting his b&w photos serves his purpose well, making the result easier to ``read'' than either color or b&w. A useful concept book with a succinct overview. (Nonfiction/Picture book. 4-8)