00312nam a2200097Ia 4500008004100000082004500041100002400086245005900110260003700169300000800206140113s9999 xx 000 0 und d a"581.132.02""1974.8.26/30""(082.2) L5" a"Marcelle, R., Ed." aenvironmental and biological control of photosynthesis a1975bDr. W.Junt.B.U.cThe Hague a408