Ryder, G.H. (1980). Strength of materials / G.H. Ryder. London :: ENglish Language Book Society and Macmillan,.
Ryder, G.H. Strength of materials / G.H. Ryder. London :: ENglish Language Book Society and Macmillan,, 1980
Ryder, G.H. Strength of materials / G.H. Ryder. London :: ENglish Language Book Society and Macmillan,, 1980.