Volume 87, Issue 3, May 1968

Structure of inseparable extensions

Pages 401-410 by Moss Eisenberg Sweedler

Embedding real projective spaces

Pages 411-422 by Mark Mahowald, R. James Milgram

Structurally stable systems on open manifolds are never dense

Pages 423-430 by Maurício Matos Peixoto, Charles Chapman Pugh

Block bundles. III. Homotopy theory

Pages 431-483 by Colin Patrick Rourke, Brian Joseph Sanderson

The index of elliptic operators. I.

Pages 484-530 by Michael Francis Atiyah, Isadore Manuel Singer

The index of elliptic operators. II.

Pages 531-545 by Michael Francis Atiyah, Graeme B. Segal

The index of elliptic operators. III.

Pages 546-604 by Michael Francis Atiyah, Isadore Manuel Singer