TY - BOOK AU - Miroljubov, I. N. AU - Engalyčev, S.A. AU - Sergievskij, N.D. TI - ˆAn ‰aid to solving problems in strength of materials PY - 1983/// CY - Μ. PB - Mir KW - Ж121я-41 KW - rubbk ER -