Kukla Active 9 years agoTopics: 1Replies: 2☆ProfileForumsTopics StartedReplies CreatedEngagementsForum Topics StartedViewing topic 1 (of 1 total)TopicViewsPostsLast Post Efficiency ratios calculation Started by: Kukla in: OBU Forums4901 9 years ago Kukla Viewing topic 1 (of 1 total)