## Contents of Volume 158, Number 2

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- Prime ideals in a large class of nonassociative rings
- Paul J. Zwier PDF
- Trans. Amer. Math. Soc.
**158**(1971), 257-271

- Locally noetherian commutative rings
- William Heinzer and Jack Ohm PDF
- Trans. Amer. Math. Soc.
**158**(1971), 273-284

- Some analytic varieties in the polydisc and the Müntz-Szasz problem in several variables
- Simon Hellerstein PDF
- Trans. Amer. Math. Soc.
**158**(1971), 285-292

- Embedding a partially ordered ring in a division algebra
- William H. Reynolds PDF
- Trans. Amer. Math. Soc.
**158**(1971), 293-300

- Necessary conditions for stability of diffeomorphisms
- John Franks PDF
- Trans. Amer. Math. Soc.
**158**(1971), 301-308

- Inductive definitions and computability
- Thomas J. Grilliot PDF
- Trans. Amer. Math. Soc.
**158**(1971), 309-317

- The space of retractions of the $2$-sphere and the annulus
- Neal R. Wagner PDF
- Trans. Amer. Math. Soc.
**158**(1971), 319-329

- Sufficiency classes of $\textrm {LCA}$ groups
- Trans. Amer. Math. Soc.
**158**(1971), 331-338

- Characteristic subgroups of lattice-ordered groups
- Richard D. Byrd, Paul Conrad and Justin T. Lloyd PDF
- Trans. Amer. Math. Soc.
**158**(1971), 339-371

- The existence of solutions of abstract partial difference polynomials.
- Irving Bentsen PDF
- Trans. Amer. Math. Soc.
**158**(1971), 373-397

- Word problem for ringoids of numerical functions
- A. Iskander PDF
- Trans. Amer. Math. Soc.
**158**(1971), 399-408

- An approach to the polygonal knot problem using projections and isotopies
- L. B. Treybig PDF
- Trans. Amer. Math. Soc.
**158**(1971), 409-421

- Concerning a bound problem in knot theory
- L. B. Treybig PDF
- Trans. Amer. Math. Soc.
**158**(1971), 423-436

- Bounded holomorphic functions of several complex variables. I
- Dong Sie Kim PDF
- Trans. Amer. Math. Soc.
**158**(1971), 437-443

- The product theorem for topological entropy
- L. Wayne Goodwyn PDF
- Trans. Amer. Math. Soc.
**158**(1971), 445-452

- Whitehead products as images of Pontrjagin products
- Martin Arkowitz PDF
- Trans. Amer. Math. Soc.
**158**(1971), 453-463

- Engulfing continua in an $n$-cell
- Richard J. Tondra PDF
- Trans. Amer. Math. Soc.
**158**(1971), 465-479

- Quasiconformal mappings and Royden algebras in space
- Lawrence G. Lewis PDF
- Trans. Amer. Math. Soc.
**158**(1971), 481-492

- Differentiable monotone maps on manifolds. II
- P. T. Church PDF
- Trans. Amer. Math. Soc.
**158**(1971), 493-501

- Invariant states
- Richard H. Herman PDF
- Trans. Amer. Math. Soc.
**158**(1971), 503-512