TY - THES ID - 137540561 TI - The interaction between Cooperia spp. and Ostertagia spp. (Nematoda : trichostrongylidae) in cattle AU - Frankena, K. AU - Landbouwuniversiteit Wageningen. PY - 1987 PB - Wageningen s.n. DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:137540561 AB - ER -