"kumar, krishan . "
thery of classification: / krishan.. kumar - 4 ed. - india : vikas 1998. - "xii, 560p.; 22 cm."
07-069-8638-5
library classification--
025. 4 kum
thery of classification: / krishan.. kumar - 4 ed. - india : vikas 1998. - "xii, 560p.; 22 cm."
07-069-8638-5
library classification--
025. 4 kum