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- [7] STUDIES ON SURVIVAL OF EGGS AND INFECTIVE LARVAE OF OSTERTAGIA-OSTERTAGI AND COOPERIA-ONCOPHORA IN LIQUID CATTLE MANURE ZENTRALBLATT FUR VETERINARMEDIZIN REIHE B-JOURNAL OF VETERINARY MEDICINE SERIES B-INFECTIOUS DISEASES IMMUNOLOGY FOOD HYGIENE VETERINARY PUBLIC HEALTH, 1974, 21 (05): : 311 - 317