Thirlwell, J B .
Elementary engineering mechanics / Textual Documents J B Thirlwell. - 1 / . - London : McDonald , 1955. - 126 ; .
620.1 / THI/EL
Elementary engineering mechanics / Textual Documents J B Thirlwell. - 1 / . - London : McDonald , 1955. - 126 ; .
620.1 / THI/EL