Richard P. Langford
发表
Lee J. Suttner,
Richard P. Langford,
Albert W. Schultz,
1984
.
Terry L. Pavlis,
Richard P. Langford,
José M. Hurtado,
2010
.
Raed Aldouri,
Richard P. Langford,
Philip C. Goodell,
2007
.
Richard P. Langford,
R. Langford,
2003
.
Terry L. Pavlis,
Richard P. Langford,
R. Langford,
2011
.
Richard P. Langford,
Diane E. White,
R. Langford,
2009
.