00662cam a2200217@a 4500001001200000008004100012010001700053020001800070020001500088041000800103082000800111100004700119245008800166250001300254260003900267300002700306650002900333700001500362700005200377999001500429ocm85924067960305s1984             f    000 @ afr d  aPOTUN 303962  a9780798612975  z079861297507beng  a5001 aVan Dyk, J. J.q(Johannes Jurgens),d1933-10aAlgemene wetenskap in aksie.nStanderd 5 /cJ.J. van Dyk, E. Bouwer, J.C. Müller.  a1ste dr.  aPretoria :bDe Jager-HAUM,cc1984.  a216 p. : ill. ; 23 cm. 0aSciencexSkoolhandboeke.1 aBouwer, E.1 aMüller, J. C.q(Johannes Christoffel),d1942-  c4629d4629