共 9 条
[1]
[Anonymous], MMWR
[2]
Centers for Disease Control and Prevention, 2002, Behavioral risk factor surveillance system survey questionnaire
[6]
RALSTON K, HLTH SCH MEAL ENV
[7]
*USDA, RUR DEV THEM PAP
[8]
*USDA FOOD NUTR SE, WIC FARM MARK NUTR P
[9]
Zenk SN, 2006, ETHNIC DIS, V16, P275