72 Architecture
721 Architectural materials and structural elements
721.04 Architectural materials 721.1 Foundations 721.2 Walls 721.3 Columnar constructions 721.4 Curved constructions and details 721.5 Roofs and roof structures 721.6 Floors 721.7 Ceilings 721.8 Other elements
Dewey Decimal Classification
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License by OCLC Online Computer Library Center, Inc. Permissions beyond the scope of this license may be available at here. All copyright rights in the Dewey Decimal Classification system are owned by OCLC. Dewey, Dewey Decimal Classification, DDC, OCLC and WebDewey are registered trademarks of OCLC.