Mallett, E.

DEFINITIONS AND FORMULAE FOR STUDENTS (Telegraphy and Telephony).

Pp. viii+40(last 3 blank); small f'cap 8vo; printed blue paper wrappers, stapled, edges and backstrip lightly faded and rubbed, the upper wrapper faintly creased, with inked initials at top fore-corner and bookseller's sticker below author's name, a couple of tiny splits to top edge of lower wrapper; Sir Isaac Pitman and Sons, Ltd., London, 1937. *"Students of telegraphy and telephony have to learn a large number of definitions and, in the course of their studies, they obtain a large number of mathematical formulae. It is useful to have these briefly stated in one publication, and that is the purpose of this little book' [preface]. Item #167396

Price: $25.00