6 1 50 The "Hunting" Economies of the Tropical Forest Zone of South America: An Attempt at Historical Perspective Donald W. Lathrap Additional Author mixed material 1968 Origins of Agriculture: Our Father the Cayman, Our Mother the Gourd: Spinden Revisited, or a Unitary Model for the Emergence of Agriculture in the New World Donald W. Lathrap Additional Author mixed material 1977 Origins Of Agriculture: Our Father the Cayman, Our Mother the Gourd: Spinden Revisited, or a Unitary Model for the Emergence of Agriculture in the New World Donald W. Lathrap Additional Author mixed material - Origins Of Agriculture: Our Father the Cayman, Our Mother the Gourd: Spinden Revisited, or a Unitary Model for the Emergence of Agriculture in the New World Donald W. Lathrap Additional Author mixed material - Origins of Agriculture: Our Father the Cayman, Our Mother the Gourd: Spinden Revisited, or a Unitary Model for the Emergence of Agriculture in the New World Donald W. Lathrap Additional Author mixed material 1977 The "Hunting" Economies of the Tropical Forest Zone of South America: An Attempt at Historical Perspective Donald W. Lathrap Additional Author mixed material 1968