"humphrey, d . "
a shorter intermediate mechanics: / d.. humphrey - ed. - britain : longman 1971. - "xv, 728p.; 22 cm."
0-582-32236-7
620. 1 hum
a shorter intermediate mechanics: / d.. humphrey - ed. - britain : longman 1971. - "xv, 728p.; 22 cm."
0-582-32236-7
620. 1 hum