Survey on the mineral elements in forages — pangola grass (digitaria decumbens, stent) and napier grass (pennisetum purpureum, schum) — from restricted areas of the state of São Paulo, Brazil. Rev. Fac. Med. Vet. 1969;8(1):191-194. doi:10.11606/issn.2318-5066.v8i1p191-194