000 00423nam a2200157Ia 4500
008 250419s9999 xx 000 0 und d
020 _a81-219-0859-0
082 _a577
_bVER
100 _aVerma, P. S.
245 0 _aEnvironmental biology: principles of ecology
250 _a1st edition 1983 /
260 _aNew Delhi :
_bS. Chand & Company
_c2021
300 _a350 pages.
365 _a175
650 _bBiotechnology
999 _c262516
_d262516