National Academy Of Sciences National Academy Of Sciences text National Academy Of Sciences 1981 xii,195 hlm : ilus ; 23 cm National Academy Of Sciences Technologies 616.01 616.01 NAT m 20240829090438 INLIS000000000002963 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)