id	keyword
aquino-2517	environmental
aquino-2517	unep
aquino-2517	assessment
aquino-2517	ethics
aquino-2517	community
aquino-2517	ecocentrism
aquino-2517	nature
aquino-2517	philosophy
aquino-2517	land
aquino-2517	value
aquino-2517	press
aquino-2517	leopold
aquino-2517	university