00642     2200181   4500001002100000008004100021035002000062245010000082100002700182260003900209300004700248084001100295520009400306082000700400650002400407650000900431990002000440INLIS000000000023623                                   Ind    a0010-1218005461  aBiologie onderwijs in de Sowjet Unie, de Verenigde Staten en NederlandcTREFFERS, Adriaan Johan  aAdriaan Johan Treffers  aGroningenbWolters-Noordhoffc1968  axii, 251 p. ; 27 cm.cxii, 251 p. ; 27 cm.  a57TREb  aBibl.: p. 243-247.-- Index: p. 249-251.-- Thesis(Doctor)-Universiteit van Amsterdam, 1968  a57  aBIOLOGICAL SCIENCES  aUSSR  a126/71-mfn25478