title: [The course and achievement of maize variety improvement in the 20th-century in China].
authors.forename: P
authors.initials: P
authors.lastname: Tong
mesh_terms: D000383:Agriculture / Q000191:economics / Q000193:education / Q000266:history / Q000331:legislation & jurisprudence; D001947:Breeding / Q000191:economics / Q000266:history / Q000331:legislation & jurisprudence; D002681:China / Q000208:ethnology; D018556:Crops, Agricultural / Q000191:economics / Q000266:history; D049673:History, 20th Century; D010944:Plants; D012106:Research / Q000191:economics / Q000193:education / Q000266:history / Q000331:legislation & jurisprudence; D003313:Zea mays / Q000191:economics / Q000266:history