中国科学技术信息研究所--国家工程技术数字图书馆

university of pennsylvania.(4)

the university of north carolina at chapel hill.(3)

university of california los angeles.(3)

university of michigan.(3)

university of minnesota.(3)

university of washington.(3)

capella university.(2)

harvard university.(2)

state university of new york at buffalo.(2)

university of colorado at boulder.(2)

alliant international university san francisco bay.(1)

biola university(1)

boston university.(1)

capella university(1)

city university of new york.(1)

columbia university.(1)

georgetown university.(1)

indiana university.(1)

iowa state university.(1)

temple university.(1)

the chinese university of hong kong (hong kong).(1)

the johns hopkins university.(1)

the ohio state university.(1)

the pennsylvania state university.(1)

the university of british columbia (canada).(1)

the university of chicago.(1)

the university of north carolina at greensboro(1)

the university of wisconsin - madison.(1)

universiteit antwerpen (belgium).(1)

university of california berkeley.(1)