Turf nutrition '88 : report of a workshop held at the Natioanl Agriculture Centre, Stonleigh, on Thursday, 8th December, 1988 /
Shildrick, John.
National Turfgrass Council.
Fertilizer Manufacturers Association.
Sports Turf Research Institute (Bingley, England)
Bingley : National Turfgrass Council,
1989.