1
Published: 1951
Superior document: Circular / University of California, California Agricultural Experiment Station, The College of Agriculture 403
2
Published: 1925
Superior document: Bulletin / Agricultural Experiment Station / University of California, Division of Agricultural Sciences 398
3
Published: 1932
Superior document: Bulletin / Agricultural Experiment Station / University of California, Division of Agricultural Sciences 536
4
Published: 1939
Superior document: Circular / California Agricultural Extension Service 111