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GENEVA, WHO. (1978). International classification of procedures in medicine volume 1 (-). Geneva: WHO.

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GENEVA, WHO. International classification of procedures in medicine volume 1. - Geneva: WHO, 1978. Text.

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GENEVA, WHO. International classification of procedures in medicine volume 1. - Geneva: WHO, 1978. Text.

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GENEVA, WHO. International classification of procedures in medicine volume 1. - Geneva: WHO, 1978. Print.