Question:
Who was the head of Romania in Jul, 1975?

Context:
 Nicolae Iorga is the head of the government of Romania from Apr, 1931 to Jun, 1932. 
 Ion Ghica is the head of the government of Romania from Dec, 1870 to Mar, 1871. 
 Take Ionescu is the head of the government of Romania from Dec, 1921 to Jan, 1922. 
 Petre S. Aurelian is the head of the government of Romania from Dec, 1896 to Apr, 1897. 
 Mihai Tudose is the head of the government of Romania from Jun, 2017 to Jan, 2018. 
 Dimitrie Ghica is the head of the government of Romania from Nov, 1868 to Jan, 1870. 
 Dimitrie Brătianu is the head of the government of Romania from Apr, 1881 to Jun, 1881. 
 Nicolae Crețulescu is the head of the government of Romania from Jun, 1865 to Feb, 1866. 
 Barbu Catargiu is the head of the government of Romania from Feb, 1862 to Jun, 1862. 
 Constantin Sănătescu is the head of the government of Romania from Aug, 1944 to Dec, 1944. 
 Radu Vasile is the head of the government of Romania from Apr, 1998 to Dec, 1999. 
 Theodor Rosetti is the head of the government of Romania from Mar, 1888 to Mar, 1889. 
 Gheorghe Gheorghiu-Dej is the head of the government of Romania from Jun, 1952 to Oct, 1955. 
 Mugur Isărescu is the head of the government of Romania from Dec, 1999 to Dec, 2000. 
 Lascăr Catargi is the head of the government of Romania from Dec, 1891 to Oct, 1895. 
 Viorica Dăncilă is the head of the government of Romania from Jan, 2018 to Nov, 2019. 
 Nicolae Ciucă is the head of the government of Romania from Nov, 2021 to Dec, 2022. 
 Gheorghe Argeșanu is the head of the government of Romania from Sep, 1939 to Sep, 1939. 
 Nicolae Golescu is the head of the government of Romania from May, 1868 to Nov, 1868. 
 Petre Roman is the head of the government of Romania from Dec, 1989 to Oct, 1991. 
 Constantin Dăscălescu is the head of the government of Romania from May, 1982 to Dec, 1989. 
 Octavian Goga is the head of the government of Romania from Dec, 1937 to Feb, 1938. 
 Ion C. Brătianu is the head of the government of Romania from Jun, 1881 to Mar, 1888. 
 Petru Groza is the head of the government of Romania from Mar, 1945 to Jun, 1952. 
 Emil Boc is the head of the government of Romania from Dec, 2008 to Feb, 2012. 
 Alexandru G. Golescu is the head of the government of Romania from Feb, 1870 to Apr, 1870. 
 Constantin Argetoianu is the head of the government of Romania from Sep, 1939 to Nov, 1939. 
 Nicolae Văcăroiu is the head of the government of Romania from Nov, 1992 to Dec, 1996. 
 Gheorghe Tătărescu is the head of the government of Romania from Jan, 1934 to Dec, 1937. 
 Ludovic Orban is the head of the government of Romania from Nov, 2019 to Dec, 2020. 
 Ilie Verdeț is the head of the government of Romania from Mar, 1979 to May, 1982. 
 Ion Emanuel Florescu is the head of the government of Romania from Mar, 1891 to Dec, 1891. 
 Sorin Grindeanu is the head of the government of Romania from Jan, 2017 to Jun, 2017. 
 Victor Ponta is the head of the government of Romania from May, 2012 to Nov, 2015. 
 Călin Popescu-Tăriceanu is the head of the government of Romania from Dec, 2004 to Dec, 2008. 
 Nicolae Rădescu is the head of the government of Romania from Dec, 1944 to Feb, 1945. 
 Adrian Năstase is the head of the government of Romania from Dec, 2000 to Dec, 2004. 
 Mihail Kogălniceanu is the head of the government of Romania from Oct, 1863 to Jan, 1865. 
 Ion Gigurtu is the head of the government of Romania from Jul, 1940 to Sep, 1940. 
 Mihai Răzvan Ungureanu is the head of the government of Romania from Feb, 2012 to May, 2012. 
 Florin Cîțu is the head of the government of Romania from Dec, 2020 to Nov, 2021. 
 Manolache Costache Epureanu is the head of the government of Romania from May, 1876 to Aug, 1876. 
 Manea Mănescu is the head of the government of Romania from Feb, 1974 to Mar, 1979. 
 Ion G. Duca is the head of the government of Romania from Nov, 1933 to Dec, 1933. 
 Ion Gheorghe Maurer is the head of the government of Romania from Mar, 1961 to Feb, 1974. 
 Dacian Cioloș is the head of the government of Romania from Nov, 2015 to Jan, 2017. 
 Dimitrie Sturdza is the head of the government of Romania from Apr, 1897 to Apr, 1899. 
 Chivu Stoica is the head of the government of Romania from Oct, 1955 to Mar, 1961. 
 Armand Călinescu is the head of the government of Romania from Mar, 1939 to Sep, 1939. 
 Theodor Stolojan is the head of the government of Romania from Oct, 1991 to Nov, 1992. 
 Miron Cristea is the head of the government of Romania from Feb, 1938 to Mar, 1939. 
 Victor Ciorbea is the head of the government of Romania from Dec, 1996 to Apr, 1998. 
 Ștefan Golescu is the head of the government of Romania from Nov, 1867 to May, 1868. 
 Constantin Bosianu is the head of the government of Romania from Jan, 1865 to Jun, 1865.

Answer:
Manea Mănescu