1
Diterbitkan 1999
“...National Status and Trends Program (U.S.)...”
Buku
2
Diterbitkan 1999
“...National Status and Trends Program (U.S.)...”
Buku
3
mengikut Cantillo, Adriana Y.
Diterbitkan 1998
“...National Status and Trends Program (U.S.)...”Diterbitkan 1998
Buku
4
Diterbitkan 1999
“...National Status and Trends Program (U.S.)...”
Buku
5
6
mengikut Schantz, Michele M.
Diterbitkan 1998
“...National Status and Trends Program (U.S.)...”Diterbitkan 1998
Buku
7
mengikut Brush, Grace Somers.
Diterbitkan 1998
“...National Status and Trends Program (U.S.)...”Diterbitkan 1998
Buku
8
Diterbitkan 1997
“...National Status and Trends Program (U.S.)...”
Buku
9
Diterbitkan 1997
“...National Status and Trends Program (U.S.)...”
Buku
10
11
mengikut Harmon, Michelle R.
Diterbitkan 1998
“...National Status and Trends Program (U.S.)...”Diterbitkan 1998
Buku
12
Diterbitkan 1996
“...National Status and Trends Program (U.S.)...”
Buku
13
14
Diterbitkan 1996
“...National Status and Trends Program (U.S.)...”
Buku
15
Diterbitkan 1996
“...National Status and Trends Program (U.S.)...”
Buku
16
mengikut O'Connor, Thomas P., 1944-
Diterbitkan 1992
“...National Status and Trends Program (U.S.)...”Diterbitkan 1992
Buku
17
Bersiri
18
Diterbitkan 1995
“...National Status and Trends Program (U.S.)...”
Buku
19
Diterbitkan 1995
“...National Status and Trends Program (U.S.)...”
Buku
20
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