Overton, 1976. United State Patent and Trademark Office Document reference Overton, G., 1976. Method of drying blood, US Patent 4067119. United State Patent and Trademark OfficeWeb http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/…Citation key Overton, 1976Datasheets Blood meal
