MTDC Staff, . 1986. Engineering Field Notes: Volume 18 January-February 1986. 8671 3801. Washington DC: U.S. Department of Agriculture, Forest Service, Engineering. 92 p.

Topics in this issue include:

• ASNAP: Administrative Site Needs Assessment Process
• Device To Measure Road Dustiness—1985 Summer Field Evaluations
• Keeping Beavers From Plugging Culvert Inlets
• The Mammoth Alternate Exit Road Aerial P–Line Survey
• Using HP–41 C for Preliminary Road Cost Estimation
• Potential for Engineering Cost Savings With Analytical Photogrammetry
• Decisions…Decisions…Decisions
• Network Analysis Using Microcomputers for Transportation Planning
• Study of Quality of Aerial Photography
• Determining the Critical Thaw—Weakened Period in Asphalt Pavement Structures

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