Copy of a preliminary communication regarding "Air Pollution Damage to Cell Membranes in Lichens. I. Development of a Simple Monitoring Test" by L.C. Pearson
A reprint copy of Oikos Acta Oecologica Scandinavica (Vol. 15, Fasc.) It is dated 1966 and written by L.C. Pearson. The Oikos is an ecological journal issued in Denmark, Finland, Norway and Sweden