{"product_id":"first-principles-of-agriculture","title":"First Principles of Agriculture","description":"212 pp. CONTENTS: The Constituents of Plants; Origin and Formation of Soils; Composition of Soils; The Improvement of Soils; Natural Manures; Artificial and Concentrated Manures; Nitrogenous Materials; Artificial and Concentrated Manures; Phosphates; Artificial and Concentrated Manures; Superphosphates and Potash Salts; Artificial Manures or Fertilizers; Methods of Buying; Valuation; Formulas; The Rotation of Crops; The Selection of Seed; Farm Crops and Their Classification; Cereals; Grasses; Pastures; Roots; Tubers; and Market-Garden Crops; The Growth of Animals; The Constituents of Animals and Animal Food; The Character and Composition of Fodders and Feeds; The Digestibility of Fodders and Feeds; Feeding Standards; Nutritive Ratio; The Exchange of Farm Products for Concentrated Feeds; Principles of Breeding; The Pure Breeds of Farm Stock; The Products of the Dairy; Their Character and Composition; Dairy Management; Appendix; Tables; Index.","brand":"Silver, Burdett and Company","offers":[{"title":"Default Title","offer_id":20808756789318,"sku":"2288805","price":25.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1232\/9510\/products\/2288805.jpg?v=1571427020","url":"https:\/\/ym-demo.myshopify.com\/products\/first-principles-of-agriculture","provider":"Yesterday's Muse","version":"1.0","type":"link"}