00614nam a2200181Ia 4500 100521 1991 000 0 eng d 851987222 ABU, Za QR 85 The Biodiversity of microorganisms and invertebrates: its role in sustainable agriculture / D. L. Hawksworth Wallingford: C.A.B International, 1991 xx, 302p.:ill. CASAFA report series Includes bibliographical references and index microbiology Hawksworth, D. L. 59065 59065