Caution: Field 053 remains valid for LC classification numbers (PA-PT), including the classification numbers PR9180-9199.4 for French-Canadian literature, the classification numbers PR9180-9199.4 for English-Canadian literature and classification numbers PS1-3626 for American literature. | Caution: Field 053 remains valid for LC classification numbers (PA-PT), including the classification numbers PR9180-9199.4 for French-Canadian literature, the classification numbers PR9180-9199.4 for English-Canadian literature and classification numbers PS1-3626 for American literature. |