@misc{the+testing+of+road+materials+including+the+methods+used+and+the+results+obtained+in+the+road+material+laboratory+in+collaboration+with+the+office+of+public+road+inquiries,
    author = {Page, Logan Waller i Cushman, Allerton Seward},
    title = {The testing of road materials, including the methods used and the results obtained in the Road Material Laboratory, in collaboration with the Office of Public-Road Inquiries},
    address = {Washington},
    publisher = {Government Printing Office},
    date = {1903}
}