共 48 条
[41]
STRAUSS J, 1984, 457 YAL U EC GROWTH
[42]
STRAUSS J, 1985, UNPUB IMPACT IMPROVE
[44]
VITERI FE, 1971, AMINO ACID FORTIFICA
[48]
YELLEN JL, 1984, AM ECON REV, V74, P200