00399nam a2200169Ia 4500 170901s1970 xx 000 0 und d 0422731803 001.424 L32O Lawrence, John OR 69 London Tavistock Publications 1970 850 Gneralities Knowledge Operations research ddc BK 21 21 0 0 ddc 0 0 RAU RAU 2017-10-18 0 001.424 L32O 5778 2017-10-18 2017-10-18 BK