diff --git a/src/rstd/collections/avl.rs b/src/rstd/collections/avl.rs
index a3dc729..24a6d34 100644
--- a/src/rstd/collections/avl.rs
+++ b/src/rstd/collections/avl.rs
@@ -1,5 +1,3 @@
-pub mod binary;
-
 use std::{error::Error, fmt::Display, rc::Rc};
 
 use crate::flow::binary::{balancing::*, *};
diff --git a/src/rstd/collections/avl/binary.rs b/src/rstd/collections/avl/binary.rs
deleted file mode 100644
index 265960c..0000000
--- a/src/rstd/collections/avl/binary.rs
+++ /dev/null
@@ -1,108 +0,0 @@
-use crate::func::context::*;
-
-use super::*;
-
-pub struct AvlReference<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx>> {
-    node: Point<'a, Ctx, AvlNode<'a, Ctx, A>>,
-    height: u64,
-}
-
-impl<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx>> PartialEq for AvlReference<'a, Ctx, A> {
-    fn eq(&self, other: &Self) -> bool {
-        self.node == other.node && self.height == other.height
-    }
-}
-
-pub type AvlResult<'a, Ctx, A, T> = Result<T, AvlError<ParseError<'a, Ctx, Fctr<'a, Ctx, A>>>>;
-
-pub type AvlNodeResult<'a, Ctx, A> = AvlResult<'a, Ctx, A, AvlNode<'a, Ctx, A>>;
-
-pub type AvlTreeResult<'a, Ctx, A> = AvlResult<'a, Ctx, A, AvlTree<'a, Ctx, A>>;
-
-impl<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx>> AvlNode<'a, Ctx, A> {
-    fn parent_height(&self) -> AvlResult<'a, Ctx, A, u64> {
-        std::cmp::max(self.l.height, self.r.height)
-            .checked_add(1)
-            .ok_or(AvlError::Balancing(BalancingError::HeightOverflow))
-    }
-
-    pub fn into_tree(self) -> AvlTreeResult<'a, Ctx, A> {
-        let height = self.parent_height()?;
-        let node = self.into();
-        Ok(AvlTree { node, height })
-    }
-
-    pub fn new(
-        l: AvlTree<'a, Ctx, A>,
-        r: AvlTree<'a, Ctx, A>,
-        key: A,
-    ) -> AvlNodeResult<'a, Ctx, A> {
-        balanced(l.height, r.height)?;
-        Ok(Self { l, r, key })
-    }
-
-    fn matches_height(&self, parent_height: u64) -> AvlResult<'a, Ctx, A, ()> {
-        let expected = self.parent_height()?;
-        if expected != parent_height {
-            Err(BalancingError::HeightMismatch {
-                children: (self.l.height, self.r.height),
-                parent: parent_height,
-            })?
-        }
-        Ok(())
-    }
-}
-
-impl<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx>> AvlTree<'a, Ctx, A> {
-    pub fn empty(factory: Fctr<'a, Ctx, A>) -> Self {
-        Self {
-            node: Nullable::Null(AvlNodeFactory(factory)),
-            height: 0,
-        }
-    }
-
-    pub fn reference(&self) -> Option<AvlReference<'a, Ctx, A>> {
-        match self.node {
-            Nullable::Null(_) => None,
-            Nullable::NotNull(ref point) => Some(AvlReference {
-                node: point.clone(),
-                height: self.height,
-            }),
-        }
-    }
-}
-
-impl<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx>> AvlReference<'a, Ctx, A> {
-    pub fn resolve(&self) -> Resolution<'a, Ctx, AvlNode<'a, Ctx, A>> {
-        let parent_height = self.height;
-        Ctx::fmap(self.node.resolve(), move |resolved| {
-            let node = resolved?;
-            node.matches_height(parent_height)
-                .map_err(ResolutionError::Parse)?;
-            Ok(node)
-        })
-    }
-
-    pub fn height(&self) -> u64 {
-        self.height
-    }
-}
-
-impl<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx>> Clone for AvlTree<'a, Ctx, A> {
-    fn clone(&self) -> Self {
-        Self {
-            node: self.node.clone(),
-            height: self.height,
-        }
-    }
-}
-
-impl<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx> + Clone> Clone for AvlNode<'a, Ctx, A> {
-    fn clone(&self) -> Self {
-        Self {
-            l: self.l.clone(),
-            r: self.r.clone(),
-            key: self.key.clone(),
-        }
-    }
-}