### Jeremy Teitelbaum

A survey of deRham cohomology and harmonic forms in the context of p-adic symmetric spaces and Bruhat-Tits buildings.

(pp. 1120)

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### N. Immerman

A logician's view of the relationship between fundamental issues of the complexity of computational algorithms, with or without random choices, and those of mathematical logic, with or without quantifiers.

(pp. 1127)

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### Saunders Mac Lane

A graduate student of sixty years ago speaks of the rich and beautiful atmosphere and tradition of Göttingen, and its demolition by Nazi politics.

(pp. 1134)

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