Letters. Reverse osmosis plants - ACS Publications

are, however, the ones covered by ERA'S Advanced Automotive. Power. Systems Program. The confusion appears to stem from the fact that both programs ar...
0 downloads 0 Views 129KB Size
letters 33 rn x

2Z

'Transportation in "mock cities" 13E.\R S I R :

Some omission:, require comment in ! o u r otheruise exxlh:nt Special Report ( J u n e 1972) on auto engines a n d their cmiss ions. Cars arc' simply not a of niass transportation i n genuine cities such as New Y a k . Boston. and !;an Francisco. ?+lock cities such as 1-05 Angclcs and Houston, which are really cliisters of