共 19 条
[11]
MILBRATH L, 1965, POLITICAL PARTICIPAT, P119
[12]
MORRIS MD, 1975, POLITICS BLACK AM, P149
[13]
ROSENSTONE S, 1978, AM POLITICAL SCI REV, V72, P41
[14]
*US BUR CENS, 1968, 192 CURR POP REP P20
[15]
*US BUR CENS, 1976, 273 CURR POP REP P20
[16]
*US BUR CENS, 1964, 143 CURR POP REP P20
[17]
*US BUR CENS, 1977, 307 CURR POP REP P20
[18]
*US BUR CENS, 1972, 253 CURR POP REP P20
[19]
*US BUR CENS, 1976, 322 CURR POP REP P20