00540nam a22001457a 4500008004100000040005500041100002600096245006200122260004300184300001000227650001200237942001200249999001700261952011600278240719b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aLerch, Gerhard913202  aLa experimentacion en las ciencias biologicas y agricolas  aHabana: bEditorial Cientifico, c1977  a452p.  aBiology  2udccBK  c64598d64598  00102udc40709177298aNSLbNSLcGF/Rk-10/C-14/R-2d1978-01-11l0p88100r2024-07-19 00:00:00w1978-01-11yBK