00533 a2200145 4500 025.0663007 MUD 23890 38674 Mudannayake, Irangani Information needs and information practices of agricultural scientists in Sri Lanka Peradeniya Postgraduate Institute of Agriculture 1989 1989 v,50p. 22cm PGIA occasional publication No.3 Information storage and retrieval systems devoted to specific disciplines and subjects SC 51069 51069 0 0 ddc 0 0 LEN MKDL MKDL LEN 2009-09-01 0 025.0663007MUD 61243 2009-09-01 00:00:00 0.00 2016-10-31 L