00450nam a2200193Ia 4500 OSt 20260323103916.0 250729s1989 xx 000 0 und d 9788184110456 AL eng 574 CHHT M S Chhikkara 230342 Teaching of biology Ludhiana Prakash Brothers 1989 230p Biology 230343 ddc BED 238734 238734 0 0 0 0 AL AL 2025-07-29 Management Books 26.00 0 574 CHHT BED04053 2025-07-29 16:56:57 25.50 2025-07-29 BK