中国科学技术信息研究所--国家工程技术数字图书馆

the university of north carolina at chapel hill.(5)

university of california san diego.(4)

university of minnesota(4)

university of minnesota.(4)

state university of new york at binghamton.(3)

university of california berkeley.(3)

university of hawai'i at manoa.(3)

university of illinois at urbana-champaign.(3)

university of michigan.(3)

university of washington.(3)

cornell university.(2)

georgetown university.(2)

indiana university.(2)

mississippi state university.(2)

new york university.(2)

rice university.(2)

temple university.(2)

the university of north carolina at greensboro.(2)

the university of wisconsin - madison(2)

the university of wisconsin - madison.(2)

university of alberta (canada).(2)

university of california davis.(2)

university of california los angeles.(2)

university of california santa barbara.(2)

university of ottawa (canada).(2)

university of toronto (canada).(2)

arizona state university.(1)

brown university(1)

city university of new york(1)

city university of new york.(1)