Fabricating and Installing Side-Lap Roof Shingles in Eastern Pennsylvania by James Houston and John N. Fugelso [1]Archivado el 22 de agosto de 2017 en Wayback Machine.
Fabricating and Installing Side-Lap Roof Shingles in Eastern Pennsylvania by James Houston and John N. Fugelso [1]Archivado el 22 de agosto de 2017 en Wayback Machine.