B 121.409 I Lan-d-wi-r-ts-ch-aft:Dokumentation I Fra u end 0 r t e r, Sigmund V.-Survey I of abstracting services and current bibliographical tools in agriculture, forestry, fisheries, nutrition, veterinary medicine I and related Bubjects."Ed.by Sigmund v. I Frauendorfer.-München, BaseO' Wien: BLV Verlagsges. (1968). 192 S. 8 I I I I