R. Ackerman
发表
Patricia Maslin-Ostrowski,
R. Ackerman,
2002
.
Patricia Maslin-Ostrowski,
R. Ackerman,
1997
.
Laura M. Ventimiglia,
R. Ackerman,
Melissa M. Juchniewicz,
2002
.
Ian M. Mette,
Catharine Biddle,
R. Ackerman,
2018,
Maine Policy Review.
Patricia Maslin-Ostrowski,
R. Ackerman,
2002
.
R. Ackerman,
1996
.
Richard H. Ackerman,
Sarah V. Mackenzie,
S. V. Mackenzie,
2006
.
Patricia Maslin-Ostrowski,
R. Ackerman,
2000
.
G. Donaldson,
R. Ackerman,
Rebecca van der Bogert,
1995
.
Patricia Maslin-Ostrowski,
R. Ackerman,
1998
.