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% This file was created with JabRef 2.9b2.  % Encoding: UTF-8  @book{Alexander1977,  title = {Introduction to Soil Microbiology},  isbn = {9780471021797},  pagetotal = {480},  timestamp = {2015-03-02 19:20:32},  address = {New Jersey},  publisher = {Wiley},  author = {Alexander, Martin},  date = {1977-06-23},  langid = {english},  keywords = {Technology \& Engineering / Agriculture / Agronomy / Soil Science}  }  @ARTICLE{Alden_2001,  author = {Alden, L. and Demoling, F. and Baath, E.},  title = {{rapid method of determining factors limiting bacterial growth in