Authors: A C Baker | W M Davidson

Published in Journal of Agricultural Research, in 1916, in volume 6, pages 351-360

Created: 2017-10-12, modified: 2017-10-12

Authors: J H Merrill | A L Ford

Published in Journal of Agricultural Research, in 1916, in volume 6, issue 3, pages 115-127

Created: 2020-10-19, modified: 2020-10-19