APUPA Pattern is related with which process ?
ACataloguing
BClassification
CDocumentation
DAcquisition
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തയ്ക്കുമ്പോൾ തുണി മുന്നോട്ട് നീങ്ങാതിരിക്കുന്നതിൻറ്റെ കാരണം എന്ത്?