https://www.bto.org/our-work/science/publications/papers/greenhouse-emissions-footprint-free-range-eggs
The greenhouse emissions footprint of free-range eggs
The greenhouse emissions footprint of free-range eggs
Citation
Taylor, R.C., Omed, H. & Edwards-Jones, G. 2014. The greenhouse emissions footprint of free-range eggs. Poultry Science 93: 237.