Dimensions of the macadam surface -- Stone for macadam roads -- Tools and machinery -- Labor and teams -- Earthwork -- Drainage -- Shaping the subgrade -- The courses of macadam -- The roadsides -- The cost of macadam surfaces -- Maintenance.
Series:
Farmers' bulletin / United States Department of Agriculture ; no. 338
OCLC:
(OCoLC)16782823
Locations:
F3OX522 -- State Historical Society of Iowa Library (Iowa City)
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.