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  1. 1977-01-01 The text on the following pages provides data compiled by various investigators on the amount of energy available from S-rotors at various wind speeds. The author feels the potential rotor builder should use these data carefully to see if an S-rotor can meet his needs--before he begins the...
  2. 2021-01-01 A comprehensive how-to manual of Polyface Farm’s signature designs--with tips, tricks, and a half century of lessons learned through trial and error Have you wondered how to build the Polyface broiler shelter, or the dolly to move it, or an Eggmobile, Gobbledygo or Shademobile? For folks getting...
  3. 1949-05-01 The information contained in this booklet is an attempt to establish standards by which soils may be judged as to their suitability for rammod-earth work, plus the construction requirements as to density, water content, use of admixtures, use of waterproof coverings, thicknesses of walls, types...
  4. 1979-05-01 This manual describes the process and equipment used in making durable building materials using agricultural residues. It is designed for use in Third World countries in rural settings lacking electricity and gas-powered machinery. 30 pages, illustrated, photos
  5. This book is as useful and pertinent for homesteaders and small-scale farmers today as it was when it was first published more than seventy-five years ago. A wealth of labor- and money-saving projects fills its pages: spillproof chicken waterers; a portable chicken coop; a lightweight orchard...