British Standard Instiute, .
Universal decimal classification / British Standard Institute. - 2nd ed / . - London : BSI standard , 1993. - NULL : ill ; NULL .
NULL
NULL (Pbk)
UNIVERSAL DECIMAL CLASSIFICATIONS (UDC)
023.432 /
Universal decimal classification / British Standard Institute. - 2nd ed / . - London : BSI standard , 1993. - NULL : ill ; NULL .
NULL
NULL (Pbk)
UNIVERSAL DECIMAL CLASSIFICATIONS (UDC)
023.432 /