by McNeil, D.W., Helfer, A.J., Weaver, B.D., Graves, R.W., Kyle, B.N., Davis, A.M.
Published in Journal of dental research (01.02.2011)

by Helfer, J A
Published in Choice (01.08.2016)

by Helfer, J A
Published in Choice (01.03.2016)

by Helfer, J A
Published in Choice (01.01.2016)

by Helfer, J A
Published in Choice (01.11.2015)

by Helfer, J A
Published in Choice (01.08.2015)

by Helfer, J A
Published in Choice (01.02.2015)

by Helfer, J A
Published in Choice (01.01.2015)

by Helfer, J A
Published in Choice (01.07.2014)

by Helfer, J A
Published in Choice (01.01.2014)

by Helfer, J A
Published in Choice (01.11.2013)

by Helfer, J A
Published in Choice (01.11.2013)

by Helfer, J A
Published in Choice (01.07.2013)

by Helfer, J A
Published in Choice (01.03.2013)

by Helfer, J A
Published in Choice (01.02.2013)

by Helfer, J. A
Published in CHOICE: Current Reviews for Academic Libraries (01.02.2013)

by Helfer, J A
Published in Choice (01.12.2012)

by Helfer, J A
Published in Choice (01.06.2012)

by Helfer, J A
Published in Choice (01.02.2012)

by Helfer, J A
Published in Choice (01.01.2012)