"First printing, January 1929."Based on bulletins and reports published by the U.S. Dept. of Agriculture; one of these bulletins (no. 1466) by the aut...
Based on bulletins and reports published by the U.S. Dept. of Agriculture; one of these bulletins (no. 1466) by the author of this publication has been published, 1926, under the same title as this monograph.