![](/img/cover-not-exists.png)
Fixed ratio and fixed interval behavior of severely and profoundly retarded subjects
Joseph E. Spradlin, Frederic L. Girardeau, Enrique CorteVolume:
2
Year:
1965
Language:
english
Pages:
354
DOI:
10.1016/0022-0965(65)90020-2
File:
PDF, 803 KB
english, 1965