cam a22 u 4500 282814736 CHVBK 20201004002512.0 130818s1969 fi m 00 eng d (IDSBB)000671603 (NEBIS)007249947 (RERO)R006013468 (RERO)vtls006013468 SzZuIDS BS/BE A100 ger kids s1zz rero Vainio-Mattila Ilkka Extension services as a source of farming information Ilkka Vainio-Mattila Helsinki 1969 85 S. 8' Publications of the Marketing Research Institute of Pellervo Society No. 11 11 (IDSBB)000744966 074338900 Diss. Helsinki Hochschulschrift gnd-content BK020300 XK020000 XK020000 1 Hochschulschrift = Thèse/Mémoire MedeaZBZDiss Reihe idszbz ZR lw SzZuIDS BS/BE RERO RE01003 RE01003 RE010030001 UE 69.044 NEBIS Z01 Z01 MI UnSk 1969: 5002 IDSBB A100 A100 MAG UBH Diss 1970,6071 Akz: ba/uub-/u IDSBB 100 1- Vainio-Mattila Ilkka IDSBB 490 0- Publications of the Marketing Research Institute of Pellervo Society No. 11 11 (IDSBB)000744966 074338900 NEBIS 100 1- Vainio-Mattila Ilkka NEBIS 490 -- Pellervo-seuran markkinatutkimuslaitoksen julkaisuja - Publications of the Marketing research institute of Pellervo society, Finland No. 11 11 RERO 100 1- Vainio-Mattila Ilkka (RERO)A019023088 cre RERO 490 0- Publications of the Marketing research institute of Pellervo society, Finland No. 11