00426nam a2200121Ia 4500008004100000082002600041100007300067245002700140260004800167300001500215490006000230650001400290140224s9999    xx            000 0 und d  a576.6 1963 (082.2) L5  aSymposia of the Society for Experimental Biology on Symbiosis, 1963.  aSymbiosis; Proceedings  aCambridgebCambridge University Pressc1975  aviii,633p.  aSymposia of the Society for experimental Biology; no.29  aSymbiosis