"scientific article published on 01 April 1983"@en . . . "10.1016/0091-3057(83)90283-6" . "571-577" . "18" . . . "Morphine withdrawal produces differential effects on the rate of lever-pressing for brain self-stimulation in the hypothalamus and midbrain in rats"@nl . "Morphine withdrawal produces differential effects on the rate of lever-pressing for brain self-stimulation in the hypothalamus and midbrain in rats"@nl . . . "G J Schaefer" . . "Morphine withdrawal produces differential effects on the rate of lever-pressing for brain self-stimulation in the hypothalamus and midbrain in rats"@en . "art\u00EDculu cient\u00EDficu espubliz\u00E1u n'abril de 1983"@ast . "Morphine withdrawal produces differential effects on the rate of lever-pressing for brain self-stimulation in the hypothalamus and midbrain in rats"@en . "Morphine withdrawal produces differential effects on the rate of lever-pressing for brain self-stimulation in the hypothalamus and midbrain in rats"@en . "1983-04-01T00:00:00Z"^^ . . . "4" . . . "R P Michael" . . . "Morphine withdrawal produces differential effects on the rate of lever-pressing for brain self-stimulation in the hypothalamus and midbrain in rats"@nl . . "wetenschappelijk artikel"@nl . "im April 1983 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . . . "Morphine withdrawal produces differential effects on the rate of lever-pressing for brain self-stimulation in the hypothalamus and midbrain in rats"@en . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0443 \u043A\u0432\u0456\u0442\u043D\u0456 1983"@uk . "6683408" . .