commiss regul eec decemb amend regul eec form farm return purpos determin incom agricultur hold commiss european commun regard treati establish european econom commun regard council regul eec june set network collect account data incom busi oper agricultur hold european econom commun amend regul eec articl thereof commiss regul eec item includ farm return determin incom agricultur hold data collect mean farm return correspond definit commun rule council direct eec april mountain hill farm farm favour area made form farm return measur regul accord opinion commun committe farm account data network adopt regul articl definit instruct relat farm return figur head favour area annex ii chapter ii part commiss regul eec replac favour area indic major agricultur area hold situat area cover council direct eec mountain hill farm farm favour area major agricultur area hold situat area question major agricultur area hold situat favour area mean articl direct eec major agricultur area hold situat mountain area mean articl direct eec code member state area small numer inform signific oj articl regul enter forc dai public offici journal european commun appli effect account year regul bind entireti directli applic member state brussel decemb commiss poul dalsag member commiss oj oj oj oj