00540nam a2200133Ia 4500008004100000082001800041100003700059245010600096260007300202300000700275942000700282952010000289999001700389140113s9999 xx 000 0 und d a631.4:55 L2 a"Ritchey, S.J. & Cairns,J., Ed." aEcology of land : Symposium sponsored by society of the Sigma X1 and Center for Environmental Studies a1972bVerginia Polytechnic Inst. & State Univ.cBlacksburg(Verginia) a49 cBK 00104070aVTLbVTLd2014-01-13l0o631.4:55 L2pVBK987r2014-01-13 00:00:00w2014-01-13yBK c57665d57665