中国科学技术信息研究所--国家工程技术数字图书馆

columbia university.(45)

harvard university.(44)

the university of chicago.(42)

the catholic university of america.(40)

university of toronto (canada).(40)

indiana university.(33)

yale university.(32)

the university of north carolina at chapel hill.(30)

university of virginia.(30)

boston university.(28)

city university of new york.(27)

state university of new york at buffalo.(25)

the university of wisconsin - madison.(25)

university of pennsylvania.(24)

new york university.(22)

rutgers the state university of new jersey - new brunswick.(21)

southern illinois university at carbondale.(21)

university of california berkeley.(21)

university of minnesota.(21)

princeton university.(20)

duke university.(19)

stanford university.(19)

the claremont graduate university.(18)

the florida state university.(18)

the southern baptist theological seminary.(18)

university of notre dame.(18)

the ohio state university.(17)

northwestern university.(16)

university of california los angeles.(16)

columbia university(15)