Vavra, Helen Mary

Works from the collections

2 works

Books
Dental hygienists / by Walter J. Pelton, Elliot H. Pennell, Helen M. Vavra.
Pelton, Walter J.Date: 1957
Books
Diabetes source book / [prepared by Helen M. Vavra].
Diabetes and Arthritis Control Program (U.S.)Date: 1969