Paul, C. E. (1916). Heavy timber mill construction buildings. Chicago: National Lumber Manufacturers Association.
Παραπομπή Chicago StylePaul, C. E. Heavy Timber Mill Construction Buildings. Chicago: National Lumber Manufacturers Association, 1916.
Παραπομπή MLAPaul, C. E. Heavy Timber Mill Construction Buildings. Chicago: National Lumber Manufacturers Association, 1916.
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