John Buck Leonard (1864 - 1945) was a pioneering bridge engineer and architect, early advocate for reinforced concrete, working mainly in northern California.
جون بي. ليونارد (بالإنجليزية: John B. Leonard) هو مهندس معماري أمريكي، ولد في 1864، وتوفي في 1945. (ar)
John Buck Leonard (1864 - 1945) was a pioneering bridge engineer and architect, early advocate for reinforced concrete, working mainly in northern California. (en)
جون بي. ليونارد (بالإنجليزية: John B. Leonard) هو مهندس معماري أمريكي، ولد في 1864، وتوفي في 1945. (ar)
John Buck Leonard (1864 - 1945) was a pioneering bridge engineer and architect, early advocate for reinforced concrete, working mainly in northern California. (en)