Haqa I- ul-, University GC, Qadeer MA, Ali S. COMPARISON OF HYPER PRODUCER ASPERGILLUS NIGER CULTURES (IFS-5, IFS-6 AND IFS-17) FOR CITRIC ACID FERMENTATION IN SURFACE CULTURE: Short Communication. Pakistan Journal of Scientific & Industrial Research [Internet]. 2004 Oct. 25 [cited 2024 Nov. 25];47(5):403-5. Available from: http://v2.pjsir.org/index.php/biological-sciences/article/view/1560