LR Humphreys. (1997). The evolving science of grassland improvement. Cambridge University press.
Chicago Edition CitationLR Humphreys. The Evolving Science of Grassland Improvement. Cambridge: Cambridge University press, 1997.
MLA Edition CitationLR Humphreys. The Evolving Science of Grassland Improvement. Cambridge University press, 1997.
Warning: These citations may not always be 100% accurate.