1 “... involves a vast area of science and technology, the economic importance of which rivals that of any other...”

2 “... in this text, namely, mem­ brane and diffusion potentials and conductivity fluctuations. Where rival theories...”

3 “... of portable sophisticated electronic calculators (some of them rivaling general-purpose minicomputers...”

4 “... member of the panel produced a detailed argument that synchrotron radiation would never rival standard X...”