Humphrey, D .
Elementary mechanics with hydrostatics / Textual Documents D Humphrey. - 1 / . - London : Longman Green and Co , 1961. - 628 ; .
531 / HUM/EL
Elementary mechanics with hydrostatics / Textual Documents D Humphrey. - 1 / . - London : Longman Green and Co , 1961. - 628 ; .
531 / HUM/EL