TY - `BOOK` AU - Levins, Richard A. TI - Evolution in changing environments : some theoretical explorations PB - Princeton Univers. P. CY - Princeton N. J. PY - 1968 LA - eng SE - IX, 120 S. T2 - Monographs in population biology M1 - 2 KW - Populationsbiologie CN - 69 A 79 AN - UBHD-1031247 ER -