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Leaf Concentrations of Five Elements in Relation to Optimum Nutrition of a Number of Horticultural Crops
Francena Lounsbery Nolan
Jacob O. McCurdy
John Blasius Washko
John Edward Nicholas
Kermit William Kreitlow
Pennsylvania State College. Agricultural Experiment Station
Ralph L. Baker
T. A. Harper
Walter Thomas
出版
Pennsylvania State College, School of Agriculture, Agricultural Experiment Station
, 1953
URL
http://books.google.com.hk/books?id=zqJLAQAAMAAJ&hl=&source=gbs_api