共 20 条
[1]
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[2]
ANDERSON MS, 1931, USDA TECH B, V228
[3]
BROWN IC, 1935, USDA TECH B, V502
[4]
DOKTUROWSKY WS, 1938, HDB MOORKUNDE
[5]
FEUSTEL IC, 1930, USDA TECH B, V214
[6]
FEUSTEL IC, 1939, USDA TECH B, V690
[7]
GLINKA K, 1914, TYPEN BODENBILDUNG
[8]
HILGARD EW, 1892, USDA WEATHER BUR B, V3
[10]
JENNY H, 1930, MISS AGR EXP STA RES, V152