[The sickle and the scythe: an instance of path dependence].
Grantham
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D000383:Agriculture / Q000191:economics / Q000193:education / Q000266:history; D018556:Crops, Agricultural / Q000191:economics / Q000266:history; D003906:Developing Countries / Q000191:economics / Q000266:history; D002523:Edible Grain / Q000191:economics / Q000266:history; D004864:Equipment and Supplies / Q000191:economics / Q000266:history; D005523:Food Supply / Q000191:economics / Q000266:history; D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049691:History, Medieval; D012423:Rural Health / Q000266:history; D012424:Rural Population / Q000266:history; D012922:Social Change / Q000266:history