1. Announcement

   Announcement Pages: 425 - 425

2. The low magnetic field properties of superconducting bulk yttrium barium copper oxide-sintered versus partially melted material

   • R. A. Hein
   • H. Hojaji
   • S. Alterescu

   OriginalPaper Pages: 427 - 461

3. On the feasibility of high spatial resolution superconducting X-ray detectors

   • A. K. Drukier
   • W. L. Waldron

   OriginalPaper Pages: 463 - 478

4. Model for the a.c. hall effect of high-T _c superconductors

   • H. How
   • A. Widom
   • C. Vittoria

   OriginalPaper Pages: 479 - 484

5. Partial substitution of Li for Cu in superconducting YBa₂Cu₃O_y

   • Lawrence Suchow
   • Jean R. Adam
   • Kenneth S. Sohn

   OriginalPaper Pages: 485 - 492

6. Characterization of superconducting thin films by Mo₇₅Re₂₅ target for rf cavity applications

   • A. Andreone
   • A. Barone
   • U. Scotti Di Uccio

   OriginalPaper Pages: 493 - 500

7. Structure and superconductivity of Bi-(Pb)-Ca-Sr-Cu-O ceramics processed by arc melting

   • Gh. Aldica
   • M. Popescu
   • S. Mandache

   OriginalPaper Pages: 501 - 511

8. On the high-temperature superconductivity of Sr_x La _2−xCuO_4−δ

   • L. Vasiliu
   • M. Apostol

   OriginalPaper Pages: 513 - 528

9. Grain alignment and magnetization anisotropy of Nd_1.85Ce_0.15CuO₄

   • O. B. Hyun
   • S. C. Sanders
   • D. K. Finnemore

   OriginalPaper Pages: 529 - 535