1962. First Edition. 155 pages. No dust jacket. This is an ex-Library book. Pink and red cloth covered boards. Contains diagrams and plans, illustrated line drawings. Expected school library inserts, stamps and inscriptions. Pages remain clear with minimal tanning and foxing, mild to end-papers and text-block edges. Library plates, pocket and inscriptions to front paste-down and free end-paper. Stamp to title page. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Boards are bowed. Mild crushing to spine ends. Head and tail of spine has small tears. Book has a slight forward lean. Small stain to front board.