<?xml version='1.0' encoding='utf-8'?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-05-17T21:50:32Z</responseDate><request verb="GetRecord" metadataPrefix="oai_dc" identifier="oai:www.bilketa.eus:ark:/27020/go86765">https://www.bilketa.eus/in/rest/oai</request><GetRecord><record><header><identifier>oai:www.bilketa.eus:ark:/27020/go86765</identifier><setSpec>ALL</setSpec><datestamp>2026-05-11T08:59:19Z</datestamp></header><metadata> <oai_dc:dc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><dc:identifier>https://www.bilketa.eus/ark:/27020/go86765</dc:identifier><dc:creator>Onaindia, Miren (....-....)</dc:creator><dc:source>IKAS, REV</dc:source><dc:date>2010-03-01</dc:date><dc:description>Bibliografia : 49-50 or.</dc:description><dc:description>Naturak hasten eta mantentzen ditu materiaren eta energiaren zikloak biosferan Ekosistemen zerbitzuek onura nabarmenak sortzen dituzte giza ongizaterako Ekosistemen zerbitzuak modu jasanezinean erabiltzen ditugu Natura-ondarea balioetsi behar dugu Ekologiaren iraunkortasuna oinarrizko baldintza da Elkarri erabat loturik daude ekologiaren iraunkortasuna eta gizartearen iraunkortasuna Badira irtenbideak ekologiaren bidetik Pentsamoldea aldatu behar dugu</dc:description><dc:type xml:lang="eng">text</dc:type><dc:type xml:lang="fre">publication en série imprimée</dc:type><dc:type xml:lang="eng">printed serial</dc:type><dc:format>33-50 or.</dc:format><dc:relation>vignette : https://www.bilketa.eus/in/rest/Thumb/image?id=ark:/27020/go86765&amp;mat=article</dc:relation><dc:language>baq</dc:language><dc:subject>Garapen_iraunkorra</dc:subject><dc:title>Garapen iraunkorra gaur. Ekologiaren iraunkortasuna in Jakin ; 177/178</dc:title></oai_dc:dc></metadata></record></GetRecord></OAI-PMH>