Authors
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| Nickname | Name | Country | Action |
|---|---|---|---|
| Vergason | Glenn A. Vergason | Browse Items | |
| Whelan | Richard J. Whelan | Browse Items | |
| Cohen | William I. | Browse Items | |
| Nadel | Lynn Nadel | Browse Items | |
| Cohen | William I. Cohen | Browse Items | |
| Nadel | Lynn Nadel | Browse Items | |
| Madnick | Myra E. Madnick | Browse Items | |
| Pueschel | Siegfried M. Pueschel | Browse Items | |
| Pueschel | Siegfried M. Pueschel | Browse Items | |
| et al | et al | Browse Items | |
| Gazey | E.M. Gazey | Browse Items | |
| Stray-Gunderson | Karen Stray-Gunderson | Browse Items | |
| Down Syndrome Educational Trust | Down Syndrome Educational Trust | Browse Items | |
| Van Dyke | D.C. | Browse Items | |
| Mattheis | Phillip Mattheis | Browse Items | |
| Schoon Eberly | Susan Schoon Eberly | Browse Items | |
| Williams | Janey Williams | Browse Items | |
| Robertson | Shona Robertson | Browse Items | |
| Power | Kate Power | Browse Items | |
| Power | Rod Power | Browse Items |