In Russian. Grigoryan, Levon Grigorievich. Ways to Increase the Efficiency of Road Transport Use. Yerevan: The Knowledge of the Armenian SSR, 1976. Puti povysheniya effektivnosti ispol'zovaniya avtomobil'nogo transporta. In Russian /Road Transport Efficiency Pathways . All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU6923121