## Contents of Volume 221, Number 1

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- Group extensions and cohomology for locally compact groups. III
- Calvin C. Moore PDF
- Trans. Amer. Math. Soc.
**221**(1976), 1-33

- Group extensions and cohomology for locally compact groups. IV
- Calvin C. Moore PDF
- Trans. Amer. Math. Soc.
**221**(1976), 35-58

- Inclusions and noninclusion of spaces of convolution operators
- Michael G. Cowling and John J. F. Fournier PDF
- Trans. Amer. Math. Soc.
**221**(1976), 59-95

- The regularity of the locally integrable and continuous solutions of nonlinear functional equations
- Halina Światak PDF
- Trans. Amer. Math. Soc.
**221**(1976), 97-118

- Dualities for equational classes of Brouwerian algebras and Heyting algebras
- Brian A. Davey PDF
- Trans. Amer. Math. Soc.
**221**(1976), 119-146

- Homomorphisms of commutative cancellative semigroups into nonnegative real numbers
- Mohan S. Putcha and Takayuki Tamura PDF
- Trans. Amer. Math. Soc.
**221**(1976), 147-157

- Two extremal problems
- Andrew Harrington and Marvin Ortel PDF
- Trans. Amer. Math. Soc.
**221**(1976), 159-167

- Linking forms and maps of odd prime order
- J. P. Alexander, G. C. Hamrick and J. W. Vick PDF
- Trans. Amer. Math. Soc.
**221**(1976), 169-185

- Multipliers of $L^ p_ E$. I
- Daniel M. Oberlin PDF
- Trans. Amer. Math. Soc.
**221**(1976), 187-198

- Admissible and singular translates of measures on vector spaces
- Alan Gleit and Joel Zinn PDF
- Trans. Amer. Math. Soc.
**221**(1976), 199-211

- Docility at infinity and compactifications of ANR’s
- R. B. Sher PDF
- Trans. Amer. Math. Soc.
**221**(1976), 213-224

- Monotonicity, convexity and symmetric derivates
- Clifford E. Weil PDF
- Trans. Amer. Math. Soc.
**221**(1976), 225-237

- Every weak proper homotopy equivalence is weakly properly homotopic to a proper homotopy equivalence
- David A. Edwards and Harold M. Hastings PDF
- Trans. Amer. Math. Soc.
**221**(1976), 239-248

- Erratum to: “Isolated invariant sets for flows on vector bundles” (Trans. Amer. Math. Soc.
**203**(1975), 359–390) - James F. Selgrade PDF
- Trans. Amer. Math. Soc.
**221**(1976), 249