Search Results       Your search for [author]Frey, David Grove, 1915- returned 1 record.           A limnological reconnaissance of Lake Lanao. by Frey, David Grove, 1915-; Marawi City: University Research Center, Mindanao State University, 1974. Subject: Limnology -- Philippines -- Lake Lanao.          Add to Book Cart Relevance: 28.00%