312 с.

SCIENTIFIC (г-TECHNOLOGICAL

By

H. RONALD FLECK M.Sc, F.R.LC.

SECOND EDITION All Righh

Resei ved Copyright

30/- net

Published for

TEMPLE PRESS LTD., BOWLING GREEN LANE. LONDON, E.C.I

Proprietors and Publishers of "Plastics"

By

THE ENGLISH UNIVERSITIES PRESS LTD., Little Paul's House, Warwick Square London, E.C.4

Printed in Great Britain