共 19 条
[12]
KILPATRICK A, 1988, OXFORD B ECON STAT, V50, P230
[13]
MENDIS L, 1984, BRIT MANUFACTURING P
[15]
Scherer, 1970, IND MARKET STRUCTURE
[17]
STEEDMAN H, 1987, MACHINERY PRODUCTION
[18]
WENBANSMITH GC, 1981, NATIONAL I EC REV, V97, P57