In Russian. Babayan, Grigor Bugdanovich. Nitrogen, phosphorus, and potassium balance in agriculture of the Armenian SSR. Yerevan: Editions of the Academy of Sciences of the Armenian SSR,. Balans azota, fosfora i kaliya v zemledelii Armyanskoy SSR. In Russian /Nitrogen, phosphorus and potassium balance in agriculture of the Armenian SSR . 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. SKU1019261