Some factors favoring or opposing fruitfulness in Apples
C.G. Wiggans
Some factors favoring or opposing fruitfulness in Apples - Columbia Missouri Agricultural Experiment Station 1918 - Missouri Agricultural Experiment Station, Research Bulletin, No. 32 .
Some factors favoring or opposing fruitfulness in Apples - Columbia Missouri Agricultural Experiment Station 1918 - Missouri Agricultural Experiment Station, Research Bulletin, No. 32 .