Nelson, Robert E. The USDA Forest Service in Hawai : the first 20 years (1957-1977) - Berkeley, Ca. : Pacific Southwest Forest and Range Experiment Station, 1989 - 43 p - General technical report PSW-111 . - General technical report PSW-111 . LCCN: 4102 Subjects--Topical Terms: Bosques--Investigación--Hawai.