Leng, R. A. Application of biotechnology to nutrition of animals in developing countries / by R. A. Leng. - Rome, Italy : Food and Agriculture Organization of the United Nations, 1991. - 146 p. : ill. - FAO animal production and health paper ; no. 90 . ISBN: 9251030359 LCCN: 91034182 Subjects--Topical Terms: Animal biotechnology.Animal nutrition.