Excerpt from Electricity in Agriculture and Horticulture The cause of the astonishing development of vegetation under such conditions has hitherto been held to

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "pub