00303nam a2200097Ia 4500008004100000082002400041100003600065245005400101260004200155300000800197140113s9999    xx            000 0 und d  a047.1:577.4   M2.13  a"Johnston, Richard.F. et al�"  aAnnual Review of Ecology and Systematics -vol. 13  a1982bAnnual Reviews Inc.cCalifornia  a563