<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Alewell, C.</style></author><author><style face="normal" font="default" size="100%">Mitchell, M.J.</style></author><author><style face="normal" font="default" size="100%">Likens, Gene E.</style></author><author><style face="normal" font="default" size="100%">Krouse, H.R.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Sources of stream sulfate at the Hubbard Brook Experimental Forest: Long-term analyses using stable isotopes</style></title><secondary-title><style face="normal" font="default" size="100%">Biogeochemistry</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1999</style></year></dates><volume><style face="normal" font="default" size="100%">44</style></volume><pages><style face="normal" font="default" size="100%">281-299</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhang, Y.</style></author><author><style face="normal" font="default" size="100%">Mitchell, M.J.</style></author><author><style face="normal" font="default" size="100%">Christ, M.</style></author><author><style face="normal" font="default" size="100%">Likens, Gene E.</style></author><author><style face="normal" font="default" size="100%">Krouse, H.R.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Stable sulfur isotopic biogeochemistry of the Hubbard Brook Experimental Forest, New Hampshire</style></title><secondary-title><style face="normal" font="default" size="100%">Biogeochemistry</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1998</style></year></dates><volume><style face="normal" font="default" size="100%">41</style></volume><pages><style face="normal" font="default" size="100%">259-275</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>