<?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%">穆泉、张世秋</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">中国2001—2013 年PM2.5 重污染的历史变化与健康影响的经济损失评估</style></title><secondary-title><style face="normal" font="default" size="100%">北京大学学报(自然科学版</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2015</style></year></dates><volume><style face="normal" font="default" size="100%">51</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">4</style></issue></record></records></xml>