Weed warriors have unleashed a new weapon in the battle against buffelgrass on “A” Mountain: a herd of hungry sheep. Under a pilot project led by the Arizona-Sonora Desert Museum, 15 domestic sheep ...

7.5 x 3 in. (19 x 7.6 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...