00558nam a2200157Ia 4500 0000016700 20251012174547.0 930726s1977 it af b i00010 eng c 9251001650 TC930 K89 Irrigation canal lining by D. B. Kraatz. Rome Food and Agriculture Organization of the United Nations ; New York for sale by UNIPUB 1977. xviii, 199 p., [1] fold. leaf of plates ill. 23 cm. Bibliography: p. 189-199. Irrigation canals and flumes Linings. 6200 6200