Search Results       Your search for [author]Alvarado, Zenaida T. returned 1 record.           The efficacy of different levels of P-M Powder (85% piperazine citrate) dewormer on the elimination of roundworms from layers. by Alvarado, Zenaida T.; 1980. Subject: Poultry -- Diseases; Helminths.          Add to Book Cart Relevance: 21.08%