共 32 条
[21]
Ochieng J., 2014, CHALLENGES OPPORTUNI, P295, DOI [10.1007/978-3-319-07662-1_23, DOI 10.1007/978-3-319-07662-1_23]
[23]
Parvin MT., 2012, PROGR AGR, V23, P143
[25]
Rosenbaum P.R., 2002, OBSERVATIONAL STUDIE, V2nd ed.
[27]
Stockbridge M., 2003, LITERARY REV
[28]
Tolno E., 2015, Journal of Agricultural Science (Toronto), V7, P123
[29]
Ton G., 2008, CHALLENGES SMALLHOLD
[30]
Tschirley D. L., 1995, IMPROVING INFORM PER