Child, I H .
Basic principles in electrical engineering / Textual Documents I H Child. - 1 / . - London : E and F N spon ltd , 1954. - 112 ; .
621.3 / CHI/BA
Basic principles in electrical engineering / Textual Documents I H Child. - 1 / . - London : E and F N spon ltd , 1954. - 112 ; .
621.3 / CHI/BA