Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212 MiAaHDL
digitized 2011 HathiTrust Digital Library committed to preserve pda MiAaHDL
Description based on print version record
Description based on: Vol. 186, issue 1 (9 Jan. 1999); title from journal information screen (viewed Sept. 9, 2002)
Latest issue consulted: V. 211, numbers 2 (July 2011) (Nature.com, viewed July 29, 2011)