{"product_id":"teaching-the-principles-of-reciprocity-and-proportionality","title":"Teaching the Principles of Reciprocity and Proportionality","description":"\u003cp\u003eThis Tract Book Article asserts that the Principles of Reciprocity and Proportionality can be taught with exercises using Math Fractions.  Moreover, it is asserted that the Principles of Reciprocity and Proportionality are Natural Law Principles.\u003c\/p\u003e","brand":"Anthony Fejfar","offers":[{"title":"Paperback","offer_id":44406282289313,"sku":"9781111123917","price":25.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0462\/1120\/3233\/files\/1m4y4np7-front-shortedge-384_48b4d737-a417-466c-82aa-38ba9e4df417.jpg?v=1747533287","url":"https:\/\/bookswholesale.myshopify.com\/products\/teaching-the-principles-of-reciprocity-and-proportionality","provider":"BooksWholesale","version":"1.0","type":"link"}