Sijjeel Sajjad Muhammad Analysis of selected biological and chemical parameters of water in river ravi,within the vicinity of lahore city / Muhammad Sijjeel Sajjad - 1 Allama Iqbal Open University 2022. - 60p HB MPhil/MS ENG Standard No.: https://i.ibb.co/DcNFC41/Thesis-cover.png Subjects--Topical Terms: Dissertation ,Academic--MPhil Environmental design Dewey Class. No.: 584.72549 / SIA