Harwood D. Schaffer
发表
Daryll E. Ray,
Harwood D. Schaffer,
2008
.
Harwood D. Schaffer,
Z. Ouyang,
Chun-E. He,
2012
.
Harwood D. Schaffer,
2004
.
Kelly J. Tiller,
Harwood D. Schaffer,
J. Starnes,
2013
.
Harwood D. Schaffer,
D. Ray,
2019,
Renewable Agriculture and Food Systems.
Harwood D. Schaffer,
2010
.
Harwood D. Schaffer,
D. Ray,
Chad C. Hellwinckel,
2011
.