00586     2200193   4500001002100000005001500021035002000036008004100056041000700097082001800104090001800122100001600140700002100156245007000177260003300247300003000280650006700310990001500377INLIS00000000001291420240221085933  a0010-0521012914240221                |          |        aen  a616.993/ENV/p  a616.993/ENV/p0 aSTRONG, Les0 aWARDHAUGH, Keith1 aProceedings of an invitational workshop held in... /cSTRONG, Les  aAmsterdam :bElsevier,c1993  avii, 344 p.: ill.; 24 cm. 4aLIVESTOCK -- IVERMECTIN -- PARASITOSES -- ENVIRONMENTAL IMPACT  a255/ODA/93