Satisfactory control of wild morning-glory by use of 2,4-D requires proper application
W. A. Harvey
W. W. Robbins
California Agriculture 1(9):2-2. DOI: 10.3733/ca.v001n09p2a.
Not available – first paragraph follows:
An extract from the College of Agriculture Extension Service Circular 133, “ 2,4-D As A Weed Killer.” Revised June, 1947