Roark, R.N. Psychology in education : designed as a text-book, and for the use of the general reader / by Ruric N. Roark; R.N. Roark .— : American book Company, 1895 .— 322 с. — Lang: eng .— URL: https://rucont.ru/efd/128745 (дата обращения: 29.05.2024)