中国科学技术信息研究所--国家工程技术数字图书馆

harvard university.(3)

walden university.(3)

michigan state university.(2)

university of california san diego.(2)

university of illinois at chicago.(2)

university of kentucky.(2)

arizona state university.(1)

clemson university.(1)

cornell university.(1)

george mason university.(1)

georgia institute of technology.(1)

idaho state university.(1)

indiana university.(1)

kansas state university.(1)

north carolina state university.(1)

northern arizona university.(1)

northern illinois university.(1)

northwestern university.(1)

ohio university.(1)

oklahoma state university.(1)

pontificia universidad catolica del peru - centrum catolica (peru).(1)

portland state university.(1)

pratt institute.(1)

princeton university.(1)

rutgers the state university of new jersey - new brunswick(1)

rutgers the state university of new jersey - new brunswick.(1)

rutgers the state university of new jersey - newark.(1)

teachers college columbia university.(1)

temple university.(1)

tennessee state university.(1)