National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Title/Authors	Accession Number	Publication Year	Page Count	Download
Foliar Leaching and Root Uptake of Ca, Mg and K in Relation to Acid Fog Effects on Douglas-Fir. Turner, D. P; Tingey, D. T.	PB90245242	1990	12 pages
Nutrient Leaching from Conifer Needles in Relation to Foliar Apoplast Cation Exchange Capacity. Turner, D. P; van Broekhuizen, H. J.	PB92153378	1992	6 pages