00397nam a22001097a 4500003000500000038001200005082001300017100001600030245019300046260003100239300001700270NUST  aMSOHAIL  a628bKHA  aTabish Khan  aOptimization of filtration, relaxation and chemical enhanced backwashing durations using box-behnken response surface methodology in a submerged membrane bioreactor (MS Thesis - Env Engg.)  aIslamabadbNUST-IESEc2019  ap;80,;c30cm