TY  - BOOK
AU  - Daniel, Mann, Johnson, & Mendenhall, Consulting Engineers a-nd Architects (E.U.A.)
ED  - E.U.A. National Research Council. Highway Research Board.
TI  - Valuation of air space / Daniel , Mann , Johnson , & Menden-hall
CY  - Washington, D.C. : HRB
ER  -