Table of contents

Volume 40

Number 4, October 1989

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PAPERS

449

451

, and

454

, , and

457

, , and

468

and

472

, and

478

484

and

492

, and

496

, and

499

and

502

, and

508

511

, and

514

and

518

, , , , , and

522

, , and

526

, and

529

, , , and

532

and

536

, , , , and

540

, , , , and

544

548

and

552

, and

558

and

561

, and

565

, , , , and

570

, and

574

and

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