PT - JOURNAL ARTICLE AU - Herder, Robert R. TI - Problems of Safety in Tree Work AID - 10.48044/jauf.1976.008 DP - 1976 Feb 01 TA - Arboriculture & Urban Forestry (AUF) PG - 33--35 VI - 2 IP - 2 4099 - http://auf.isa-arbor.com/content/2/2/33.short 4100 - http://auf.isa-arbor.com/content/2/2/33.full