Sir Albert Howard and the forestry roots of the organic farming movement.
D000383:Agriculture / Q000191:economics / Q000266:history; D003247:Conservation of Natural Resources / Q000191:economics / Q000266:history / Q000331:legislation & jurisprudence; D018556:Crops, Agricultural / Q000191:economics / Q000266:history; D004467:Economics / Q000266:history; D004777:Environment; D004782:Environmental Health / Q000191:economics / Q000193:education / Q000266:history; D004787:Environmental Pollution / Q000191:economics / Q000266:history; D005523:Food Supply / Q000191:economics / Q000266:history; D058870:Food, Organic / Q000191:economics / Q000266:history; D016468:Forestry / Q000193:education / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D011634:Public Health / Q000191:economics / Q000193:education / Q000266:history / Q000331:legislation & jurisprudence; D012987:Soil; D013672:Technology / Q000191:economics / Q000266:history; D006113:United Kingdom / Q000208:ethnology; D014481:United States / Q000208:ethnology
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