00314nam a22001097a 4500020001800000082001700018100001800035245004200053260002800095300000700123650007400130 a81-272-1963-0 a572.82 KH/PL aDR.V K Khanna aPlant CytogeneticsbLaboratory Manual aLudhianabKalyanic2005 a84 amicroscopyaphysical nature of the chromosomeastudy of cell division