Or, The Science And Practice Of Plant-Feeding; A Presentation Of Facts, Giving Practical Methods For Using Fertilizers In Crop Growing, With Special Emphasis On... » 

Or, The Science And Practice Of Plant-Feeding; A Presentation Of Facts, Giving Practical Methods For Using Fertilizers In Crop Growing, With Special Emphasis On The Reasons Underlying Their Use, And On The Conditions Of Their Greate «