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...last2=Willey |first2=R. W. |title=The Concept of a 'Land Equivalent Ratio' and Advantages in Yields from Intercropping |journal=Experimental Agriculture | ...itle=Guidelines: land evaluation for irrigated agriculture |publisher=Food and Agricultization of the United Nations |isbn=92-5-102243-7 |pages=Glossary | ...

...ion (economics)|consumption]] of Earth's natural resources for that year), and multiplying by 365 (366 in leap years), the number of days in a year: ...|website=footprintnetwork.org |publisher=Global Footprint Network }}</ref> and national Ecological Footprints are available online.<ref name="ODP"/> ...

| developer = Ramesh Dhungel and group ...outhern Idaho]], [[Northern California]], northwest [[Kansas]], [[Texas]], and [[Arizona]]. ...