Rudd, G. 2003. Thinking Through Earth in Langland’s Piers Plowman and the Harley Lyric ’Erthe toc of erthe’. Journal for the Study of Religion, Nature and Culture. 8, 2 (Jul. 2003), 137–149. DOI:https://doi.org/10.1558/ecotheology.v8i2.137.