Squires, V. R., & Sidahmed, A. E. (1998). Drylands: Sustainable use of rangelands into the twenty-first century. IFAD.
Dyfyniad Arddull ChicagoSquires, V. R., and Ahmed E. Sidahmed. Drylands: Sustainable Use of Rangelands into the Twenty-first Century. Rome, Italy: IFAD, 1998.
Dyfyniad MLASquires, V. R., and Ahmed E. Sidahmed. Drylands: Sustainable Use of Rangelands into the Twenty-first Century. IFAD, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.