Olm, P. W. Van books & textbook
Distribution and Impact of Helminth Diseases of Livestock in Developing Countries (Fao Animal Production & Health Paper)
Olm, P. W. Van Jansen, J. Van Olm, P. W.
Food & Agriculture Org /1992-10-01 Paperback / 221 Pages
isbn-10: 9251031665 / isbn-13: 9789251031667