Y brechlyn niwmococol ar gyfer pobl hŷn : taflen wybodaeth /
Health Challenge Wales (Initiative)
Wales.Public Health Protection Division.
Caerdydd: Llywodraeth Cynulliad Cymru,
2005.
"Text taken from an original Department of Health publication."
Bound back to back and inverted.
Title from cover.
Includes bibliographical references.
Vaccines
Vaccines industry