670a615d17a028d8f014b4008754227f7327dba028d5418d39ee1e75106ccaf3  revsoc643_a1974m5n1.pdf
6f4d772147043260ebc578edca7cb4accef3bbf27cc6e0863abee4f42227aa98  revsoc643_a1974m9n2.pdf
710f6315249445cc4d1b4a4c13631f7d03829a7e26fd05d73006902a154000cb  revsoc643_a1975m9n3.pdf