7412533646

ovcr m just one avoided error!

Examinc it For 10 Days FREE    | ...

To fully appreciate the usefulness of this big 2V thick book. we invite you to use it for ten days.

If you do not flnd it to be one ol the most yaluable books you have ever owned. you may simply return it and owe nothing. Ó;herwise. remit payment on the easy terms indicated in coupon. Yoi take no risk Send coupon today to o. Von Nostrand Company, Ine., Dept. 3710A, 120 Aletonder St., Princeton, N. J. (Est(lblishe>l 1848).

Acdaimed by Major Journals in Every Field of Science

••UnlQue. Ust ful. Presents a wlde varlety of term*"

- SCIENTiriC AMERICAN

••Remnrkably complete. Hlkhly useful Provides defi-nlte and conclse answers to a myrlad of qurstlons."

- PHYSICS TODAY

••Will undoubtediy make a

»ell-deserved place for It-self." - SCIENCE

"There has been n real need for soch a work."

- ELECTRONICS

••Recommended for all that do any reference work In physlcs."

- LI8RARY JOURNAL

”Unlque In Its field and es-ceptionully clea.- In Its typog-rnphy. It shoild prov« a most usefui re erence "

- MUCLEON ICS

”The best book of deftnltlons av:tllable on th* market today. Hlghly recimmended

- TELE-TECH

October. 1959

—    MAIL•F.RlV-IXAMINATION -COUPON TODAY =-=-ń|

D. Van Nostrand Compony, Inc., Dcpt. 3710A    i

120 Alexander Street, Princeton, N. J.    |

Please send me - for 10 days* FREE escamlnatlon - the i "International Dlclionary of Physlcs and Electronics” thumb-inde\ed editlon If not complctely satlsfted. I may return it i and owe nothlns. Otherwlse I will remlt S7.50 Plus smali i shlppms cost. and $5 a month for 3 months.

Nume

Address

City....................................Zonę... .State............

□Save* Enclose fuli payment (S22.50> and shlpplna co*ts will be nrepald. Money back If not dellrhted.

In Canada: Order from D Van Nostrand Co.. Ltd., 25 Hol-ttnoer Ko ad. Toronfo 16. Canada IPrice sliohtly hi gherj)