共 55 条
[1]
ABDELLA MM, 1981, RURAL SOCIOL, V46, P42
[2]
*AGR AGR CAN, 2002, PUTT CAN 1 ARCH AGR
[3]
[Anonymous], 1996, An introduction to survey research, polling, and data analysis
[6]
BEUS CE, 1990, RURAL SOCIOL, V55, P590, DOI 10.1111/j.1549-0831.1990.tb00699.x
[7]
CAREY P, 2003, MONITORING EVALUATIO
[8]
CARLSON JE, 1981, B U IDAHO, V601
[10]
Clearfield F., 1986, SOCIOLOGICAL ASPECTS