H D Johnson

CROSS-OVER ACCIDENTS IN ALL-PURPOSE DUAL CARRIAGEWAYS

H D Johnson, 1980 .

PARKING WITHOUT LIGHTS: THE EFFECT ON ACCIDENTS

H D Johnson, Cge Bryant, 1974 .

Some events of interest to those investigating road safety: Almanac for 1975

H D Johnson, 1975 .

EFFECT OF RESISTANCE TO SKIDDING ON ACCIDENTS: SURFACE DRESSING AN ELEVATED SECTION OF M4 MOTORWAY

H D Johnson, M M Miller, 1973 .

Physiological, productive, and economic benefits of shade, spray, and fan system versus shade for Holstein cows during summer heat.

M. D. Shanklin, H. D. Johnson, H D Johnson, 1987, Journal of dairy science.

Spray cooling effects on milk production, milk, and rectal temperatures of cows during a moderate temperate summer season.

M. D. Shanklin, H. D. Johnson, H D Johnson, 1985, Journal of dairy science.