Universal Decimal Classification English Abridged edition 1961
B.S.I
Universal Decimal Classification English Abridged edition 1961 by B.S.I - 3 - London British standards Institution 1963
Photo copy
025.43 UDC;19
Universal Decimal Classification English Abridged edition 1961 by B.S.I - 3 - London British standards Institution 1963
Photo copy
025.43 UDC;19