@article{doi:10.1001/archpsyc.1969.01740200125023, author = {Bolian GC}, title = {Expanding concepts in mental retardation: A symposium.}, journal = {Archives of General Psychiatry}, volume = {21}, number = {2}, pages = {253}, year = {1969}, doi = {10.1001/archpsyc.1969.01740200125023}, URL = { + http://dx.doi.org/10.1001/archpsyc.1969.01740200125023}, eprint = {/data/Journals/PSYCH/12181/archpsyc_21_2_023.pdf} }