by Fulkerson, Anne L., Haaf, Robert A.
Published in Infancy (01.06.2003)

by Fulkerson, Anne L., Haaf, Robert A.
Published in First language (01.11.2006)

by Haaf, Robert A, Fulkerson, Anne L, Jablonski, Brandon J, Hupp, Julie M, Shull, Stacey S, Pescara-Kovach, Lisa
Published in Journal of experimental child psychology (01.10.2003)

by Vidic, Janice M, Haaf, Robert A
Published in The Psychological record (01.04.2004)

by Lundy, Brenda L., Jackson, Jay W., Haaf, Robert A.
Published in Perceptual and motor skills (01.06.2001)

by Cullen, Bernard J, Hull Smith, Peg, Funk, Jeanne B, Haaf, Robert A
Published in Child abuse & neglect (01.04.2000)

by Coldren, Jeffrey T., Haaf, Robert A.
Published in The Journal of genetic psychology (01.12.2000)

by Pescara-Kovach, Lisa, Fulkerson, Anne L., Haaf, Robert A.
Published in Infant behavior & development (2000)

by Haaf, Robert A., Smith, P. Hull, Smitley, Suzanne
Published in Child development (01.02.1983)

by Haaf, Robert A., Smith, Joel A.
Published in Child development (01.06.1976)

by Haaf, R A, Brown, C J
Published in Journal of experimental child psychology (01.08.1976)

by Haaf, Robert A., Bell, Richard Q.
Published in Child development (01.09.1967)

by Bell, Richard Q., Haaf, Robert A.
Published in Child development (01.03.1971)

by Fulkerson, Anne L., Haaf, Robert A.
Published in Infant behavior & development (01.04.1998)

by Coldren, Jeffrey T., Haaf, Robert A.
Published in Infant behavior & development (01.04.1996)

by Pescara-Kovach, Lisa, Vidic, Janice M., Haaf, Robert A.
Published in Infant behavior & development (01.04.1998)

by Coldren, Jeffrey T., Haaf, Robert A.
Published in Infant behavior & development (1999)

by Vidic, Janice M., Haaf, Robert A., Loboschefski, Tim W.
Published in Infant behavior & development (01.04.1996)

by Haaf, Robert A., Lundy, Brenda L., Coldren, Jeffrey T.
Published in Infant behavior & development (1996)

by Haaf, Robert A
Published in Child Development (01.02.1983)