Dung N, Dung T, Ba T. RESEARCHED THE METHOD TO DETERMINE ICE RATIO IN MATERIALS FREEZE AND OPTIMAL TEMPERATURE OF FREEZE IN STAGE 1 OF PROCESSING FREEZE - DRYING. Science and Technology Development Journal [Internet]. 31Dec.2008 [cited 7May2024];11(12):74-6. Available from: http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/2718