TY - JOUR CN - QH302 CN - QH302 CY - San Francisco, DA - [1969- ID - 55317 KW - Biology. N1 - Vols. 1- are Scientific American offprints no. 1/51- PB - W. H. Freeman PP - San Francisco, PY - [1969- T1 - Readings in the life sciences. TI - Readings in the life sciences. ER -