B1 beam, 1958
B2 beam, 1958
B3 beam, 1958
B4 beam, 1958
B5 beam, 1958
B6 plate, 1958
B7 reinforced concrete construction diagram, 1958
B8 reinforced concrete construction diagram, 1958
B9 schematic reinforced concrete structure, 1958
B10 schematic reinforced concrete structure, 1958
B11 schematic reinforced concrete structure, 1958
B12 schematic reinforced concrete construction, 1958