Ball et al., 2000. Circular 00-1. Oregon Clover Commission, Salem, Oregon Document reference Ball, D.M. ; Lacefield, G. D., 2000. Crimson clover. Circular 00-1. Oregon Clover Commission, Salem, OregonWeb http://www.oregonclover.org/downloads/files/crimsonclover.pdfCitation key Ball et al., 2000Datasheets Crimson clover (Trifolium incarnatum)
