TY - GEN AU - PRAKASH, RAVI AU - RATHO, T N TI - EMERGING TRENDS IN TEACHING OF BOTANY U1 - 580 RAT/EM CY - NEW DELHI, KANISHKA KW - COLLECTION AND PRESERVATION OF SPECIMENS KW - ORIGIN OF SPECIES KW - PLANT DISEASES KW - PLANTS OF THE PAST KW - THE STEM & LEAF ER -