2 Patents
n.d.no date or unknown
Biological flocculation of mineral slimes
Leslie, John⋅Greasham, Randolph L and Hulbert, Matthew H (Inventors).
4456532
 
Biological Flocculation Of Mineral Slimes
Leslie, John⋅Hulbert, Matthew H and Greasham, Randolph L (Inventors).
CA1228938