1929. No Edition Remarks. 171 pages. No dust jacket. This is an ex-Library book. Blue cloth boards with gilt lettering. Contains black and white illustrations and folded diagrams. Expected library inserts, stamps and inscriptions. Clean pages and illustrations with light tanning and mild foxing throughout. Top textblock edge dyed blue. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Minor sunning to spine and edges with crushing to spine ends.