共 10 条
[1]
CARTER CF, 1957, IND TECHNICAL PROGR, pCH16
[2]
*FED TRAD COMM, 1957, REP IND CONC PROD DI, P22
[3]
HENNIPMAN P, 1954, MONOPOLY COMPETITION, P454
[4]
JEWKES J, 1958, SOURCES INVENTION, pCH5
[5]
MACLAURIN WR, 1950, AM EC REV, V40, P110
[6]
*NAT RES PLANN BOA, 1940, RES NAT RES, V2, P124
[7]
*NAT SCI F, 1956, SCI ENG AM IND FIN R, P7
[8]
QUINN TK, 1953, GIANT BUSINESS THREA, pCH12