000			00325nam a22001217a 4500
999			_c155074 _d155074
082			_a _b
245			_aOperation blackboard essential facilities at the primary stage norms and specifications/ _cby Dave P N (ed.).
260			_a _bNCERT, _c1988.
300			_a66p.
650			_a
700			_aDave P N (ed.)
942			_cBK