diff --git a/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java b/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java
index 42bdabf..8837331 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/PublicBookManager.java
@@ -11,16 +11,25 @@
 
     private final BookManager bookManager;
 
+    private HashSet<Book> publicBooks = new HashSet<>();
+
     public PublicBookManager(BookManager bookManager) {
         this.bookManager = bookManager;
+        this.bookManager.addListener(this);
     }
 
     public ArrayList<Book> getAllPublicBooks(){
-        return null;
+        return new ArrayList<>(this.publicBooks);
     }
 
     public ArrayList<Book> searchBooksByTitle(String title){
-        return null;
+        ArrayList<Book> books = new ArrayList<>();
+        for(Book book : this.publicBooks){
+            if(book.getTitle().equals(title)){
+                books.add(book);
+            }
+        }
+        return books;
     }
 
     public ArrayList<Book> searchBooksByTitle(String title, int sortBy){
@@ -28,6 +37,7 @@
     }
 
     public ArrayList<Book> searchBooksByAccount(String accountId){
+
         return null;
     }
 
@@ -42,9 +52,5 @@
     @Override
     public void bookChanged(Account account, Book book) {
 
-
     }
-
-
-
 }