1-3 of 3 Books

Effects of application rate and timing of ethephon treatments on abscission of ponderosa pine dwarf mistletoe 4 years following treatment
By D.W. Johnson

Effects of application rate and timing of ethephon treatments on abscission of ponderosa pine dwarf mistletoe 3 years following treatment
By D.W. Johnson

Effects of application rate and timing of ethephon treatments on abscission of ponderosa pine dwarf mistletoe two years following treatment
By D.W. Johnson