## Contents of Volume 133, Number 1

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- The abstract time-dependent Cauchy problem
- Matthew Hackman PDF
- Trans. Amer. Math. Soc.
**133**(1968), 1-50

- The Stefan problem in several space variables
- Avner Friedman PDF
- Trans. Amer. Math. Soc.
**133**(1968), 51-87

- One dimensional Stefan problems with nonmonotone free boundary
- Avner Friedman PDF
- Trans. Amer. Math. Soc.
**133**(1968), 89-114

- On finite groupoids and $\mathcal {K}$-prime algebras
- Ralph McKenzie PDF
- Trans. Amer. Math. Soc.
**133**(1968), 115-129

- On the residual finiteness of generalized free products
- Joan Landman Dyer PDF
- Trans. Amer. Math. Soc.
**133**(1968), 131-143

- Martingale integrals
- P. Warwick Millar PDF
- Trans. Amer. Math. Soc.
**133**(1968), 145-166

- Lower bounds for approximation by nonlinear manifolds
- Hugh E. Warren PDF
- Trans. Amer. Math. Soc.
**133**(1968), 167-178

- Ratio properties in locally compact amenable groups
- William R. Emerson PDF
- Trans. Amer. Math. Soc.
**133**(1968), 179-204

- Cohomology of algebras over Hopf algebras
- Moss Eisenberg Sweedler PDF
- Trans. Amer. Math. Soc.
**133**(1968), 205-239

- On quasi-elliptic boundary problems
- Tadato Matsuzawa PDF
- Trans. Amer. Math. Soc.
**133**(1968), 241-265

- Measures on $F$-spaces
- G. L. Seever PDF
- Trans. Amer. Math. Soc.
**133**(1968), 267-280