IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This open-caged ball valve has ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is an open-cage, non-tilting ...

Isolated absence of the opening click of the mitral disk-valve prosthesis was noted in six patients subsequently found to have suture disruption. Of five reoperated on, four survived.

Any Chevy engine, if it's well-modified or just slightly warmed-over, requires a good set of valve seals. Originally, a small rubber O-ring, fitted in the second valve stem groove, served as the only ...