Guide to the Use of UDC: An Introductory Guide to the Use and Application of the Universal Decimal Classification

Guide to the use of UDC: an introductory guide to the Use and application of the Universal Decimal Classification , Guide to the use of UDC: an introductory guide to the Use and application of the Universal Decimal C... , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی